CHARLES J. BUTTON WWMWWUNG WW 1817 MULIMIA ASUALITHUNTELIN ARTES SCIENTIA LIBRARY VERITAS OF THE WIVERSITY OF MICHI UMID MAMADALLU TCEBOR ARROSS SI-QUERIS PEN AVAIN ZAMAMONAM CIRCUMSPICU ESSSSSSSSSSSSSSSSSSSSSS TURTILLUMILITY SIMILARMON MUOTOILU H huu DJTUALIT BEQUEST OF PROFESSOR OF LATIN ARIDU! to com POISON UNKNOWN By CHARLES J. DUTTON "The first man to enter a new station brings murder on his heels" is an old police saying and Timothy Rogan was no exception. His first assignment—to watch the house of a wealthy gentleman who had received two threatening letters— seemed quite innocuous. But that very night a prominent physician suddenly dropped dead at that same man's dinner table, poisoned by some drug unknown to science! Harley Manners, the famous professor of abnormal psychology, whom Mr. Dut- ton's readers remember well, is called in. No clues, no motive, no method, not even theories. Then fate strikes again, with an- other murder, this time even more puz- zling than the first. It is not until Man- ners has discarded every idea he had built up, and started afresh from the standpoint of our newest criminal psychology, that he is able to gain a hint of the method in these crimes and their perpetrator. Those who enjoyed the originality of "Murder in a Library" will welcome this astonishing story. For here is a brand new poison which Mr. Dutton believes has never been used in a mystery story and is not mentioned in any work on toxicology. As for the story, it has all the excitement, speed and logic character- istic of this widely-known writer. BY THE AUTHOR OF: THE CROOKED CROSS FLYING CLUES THE SHADOW OF EVU. MURDER IN A LIBRARY POISON UNKNOWN BY THE SAME AUTHOR Mystery Stories THE UNDERWOOD MYSTERY OUT OF THE DARKNESS THE SHADOW ON THE GLASS THE HOUSE BY THE ROAD THE SECOND BULLET FLYING CLUES THE CROOKED CROSS THE CLUTCHING HAND STREAKED WITH CRIMSON THE SHADOW OF EVIL MURDER IN A LIBRARY POISON UNKNOWN Biography THE SAMARITANS OF MOLOKAI: THE LIVES OF FATHER DAMIEN AND BROTHER DUTTON AMONG THE LEPERS udson By CHARLES J. DUTTON A. L. BURT COMPANY PUBLISHERS New York Chicago Published by arrangement with Dodd, Mead and Co. Printed in U. S. A. BY DODD, MEAD AND COMPANY, INC. ALL RIGHTS RESERVED NO PART OF THIS BOOK MAY BE REPRODUCED IN ANY FORM Printed and Bound in the U.S.A. by the Grady BOOKBINDING CO., N. Y. C. Το JOE AND MAE 1 1 . E. за тР BEQ (*ST ve teto 200 ot-11-5 NOTE I am indebted to Prof. Earle Galloway of the Des Moines College of Pharmacy for information regarding the poison mentioned in this book-a rare and extremely obscure poison, which actually exists o 1 CHAPTER I Timothy Rogan wanted to take off his coat. It was decidedly a new garment with brass buttons sparkling on blue broadcloth. On his chest was a badge, a mas- sive, glittering thing of gold, bearing the word CHIEF. Only an hour ago the mayor himself had made a speech, and after referring to "our brave and efficient police chief" had pinned the badge over the place where he thought Rogan's heart should be. The occasion had been the official dedication of the new police headquarters, and the speech had been rather long and flowery. As he sank down into the chair behind his desk, the thought of the speech caused the round face to frown. He wanted to take off his coat, throw it down on the desk, and then light a stogie. That was what he would have done in his old office. But this room, with its shining furniture, its air of newness, rather awed him. He had been in the habit of tilting back in his chair and putting his feet on the desk. But that was in the old office. Now the familiar desk, stained and worn by the years, had vanished; and he realized one must treat this shining mahogany with respect. And he did not like the chair he was sitting in, a chair which touched him in unexpected places. For the chair, like everything else in the room, was new. With a gloomy sigh he ran his big hands through his snow-white hair. When the gesture was over, the POISON UNKNOWN hair was in wild disorder, but he felt more at ease. Instinct caused a hand to reach down towards a drawer, only to have it pause in mid-air. In the old office there would have been a box of stogies in that drawer. There was none here. But on the smooth surface of the desk stood a box of cigars that some- one had sent in as a gift—a box at which he gave a scowling glance, just as though it did not contain the most expensive brand the city could produce. How- ever, they were better than nothing and, without looking at the label, he opened the box and lighted a cigar. Slumped far down in the chair he soberly watched the smoke drift through the room, as he realized that he was very tired. All morning he had been com- pelled to listen to speeches, and the lunch at which he had been given the gold badge had ended the ceremonies. For thirty-five years the city had been talking about a new police headquarters, and at last it had become a reality. For the first time he was sitting behind his desk in the new building; and he was not happy. Thirty-five years . . . almost the same period that he had been on the force . . . years of hard work they had been, with small salary and, since he became chief, lots of complaints. He would retire in six months; but he realized he would never be happy. If only they had allowed him to end his career in the old office! There were memories in that room; comedy and tragedy had played their "parts in the dingy office, whose door for twenty years had told the city he was their chief of police. POISON UNKNOWN As his eyes went slowly traveling around the room, he admitted to himself this was a far better place. There was space here, a high ceiling, large windows that he knew overlooked the lake. But it was all so new, the furniture so glittering, that somehow he felt out of place. The old office had been home; this place—well, he hardly knew what it was. He should have been at peace with the world, for the noon lunch had been given in his honor and very flattering things had been said about him. His lips twitched into a half-smile, as he thought of the non- sense the mayor had voiced. What did the outside world know about police work? Nothing! Though they did know how to complain when things did not suit them. For some reason he felt depressed, uneasy and alone. In the old station all sorts of sounds would have come drifting down the hallways to creep under his door. There were no sounds here. True, he could hear the wind howling from across the lake; but that was all. Save for the sound of the wind he might as well have been alone in the building. He knew he was not, knew that beyond his door were many other rooms filled with men who were at their tasks; yet, knowing this, he caught himself bending forward as though listening for some sound that would tell him the building was occupied. He thought once more of the lunch. What was it the mayor had said? Something about the city's now having one of the best-equipped police headquarters in the country. He had boasted that every scientific device used in the detection of crime was now at the I POISON UNKNOWN disposal of the citizens. Rogan had smiled a little when this was said—though he knew it to be true. As he thought over the mayor's remarks he slowly shook his head. Science was all right, and one needed every bit of technique one could get, but again and again he had seen it fail. There was such a thing as intuition (though Rogan would have called it a hunch) and as he thought this he gave a start. He had suddenly remembered an old saying that he had heard quoted many times in police circles that when a police chief moves into a new headquarters his first case will be a murder. He had been depressed before the saying flashed into his mind, but afterwards his gloom increased. So far as he knew, the desk man had yet to book the first prisoner, for not until Rogan walked into his new office had the headquarters been pronounced open. As yet no one had wished to see him. But somehow, deep down in his mind, he knew that be- fore he went out there would be a visitor. Why he knew it he could not tell; but he was certain. For a while he tried to throw off the feeling which had crept over him, by thinking of his long years on the force. The thoughts brought him no comfort. Thirty-five years was a long time, and during those years all the sordid ugliness of the city's life had come to his attention. It had been a small city when he started out as a patrolman; now it had a popula- tion of over a quarter of a million. And with the in- crease in population had come an increase in stupid, vicious crime. He rose, at last, to walk slowly over to the win- POISON UNKNOWN 5 dows. The old office had been partly below the street level, and nothing could be seen from its windows except the feet of people on the sidewalk. Bat these windows commanded a view of the lake, and for a while he stood looking down at the tumbling water. A half-gale was sweeping in from Canada. It came lashing across the lake, whipping its surface into a mass of rushing white-caps. Below him he could see the public dock, noticed spray was dashing in blind- ing sheets over the lower end. Far out, almost at the horizon's rim, an ore boat was laboriously pound- ing its way into the wind. The scene fitted into his mood. On a calm day the lake would have been a mass of glittering silver, with sunlight dancing on its surface. There would have been boats, and through the windows would come the laughter of children playing about the docks. But today the water was dark and troubled, and the wind shrieked around the building, howling as if it were on the track of a long-wanted criminal. As he walked back to his desk to sink down in the chair he concluded he was old. In six months he ex- pected to retire on his pension; and he decided it was time he did. For twenty years he had directed the police force of the city: twenty years of anxiety and trouble, worry and hard work. It had been dif- ficult enough when he first entered his position; but in the last few years it had become worse. The char- acter of crime had changed; there was more of it, and the criminals were more youthful. A younger man might find the office far less troublesome than he. 6 POISON UNKNOWN There were many in the city who said that the red-faced man sitting behind the big desk was a rough-neck. Others admitted that he was tough and hard, endowed with a bad temper and totally devoid of sympathy. But the men under Rogan never said these things. Among themselves they might growl and grumble about the "old man"; but they loved him. Even those who disliked him, and there were many in the city who did, admitted that he was ef- ficient. And no one had ever accused Rogan of being dishonest or unfair. Lifting his head he gravely studied the large room. His successor would have a better place to start with than he had had. What was more, he would have a well-trained police force, a group of men whom he could trust. It had taken years to build up the force to its present state of efficiency. He was proud of his men; and his successor would be proud of them. A sound came drifting across the floor. Someone was fumbling with the knob of the door. Turning he saw it slowly open, watched the head that gave a quick glance into the room and recognized the face as that of George Kent, the head of his Homicide Squad. Soberly he watched the tall young officer slip into the room and then carefully close the door. Wondering a little what was wanted he waited as the man crossed over to his side without speaking. The inspector was a tall, raw-boned man, and if Rogan had any favorite on the force it was the head of his murder squad. He wondered if anything was troubling his officer; but a glance at the expression- less face assured him all was well. Obeying the chief's POISON UNKNOWN gesture the inspector brought a chair over from the wall and seated himself beside the desk. Then his eyes slowly traveled over the room. "It looks better than the old joint," was the com- ment. There came only a grunt from Rogan; for he was not going to express himself about his new office. He was homesick for the old room, but he would never say so. Yet as Kent watched the stern, sober face, observed the disheveled white hair, he knew what his chief was thinking. What was more he sympa- thized with the look that was upon the red face. With an odd expression, Rogan reached for the box of cigars, and shoved it across the desk. With- out a word Kent picked out a cigar, and slowly ap- plied the match. Silence for a while, in which he studied the cold, set face across from him. The chief was not feeling very happy—though, thought Kent, after the flattering words from the mayor Rogan should have been in a far better humor than he ap- peared. At last came the moment when the stodgy figure stirred uneasily in the chair. The rough voice growled forth a question: "Everything in the place in running order?" Kent nodded, replying that everything had started off without any trouble. He smiled as he told the chief they had already booked their first prisoner. The sudden start from Rogan was due to his re- membering the old saying. He wanted to know what the charge had been, smiled when informed it was only a drunken driver. Then sitting upright he be- came serious: 8 POISON UNKNOWN "You know, Kent, I have been in this game a long time." There was a pause as he reflected a second. "Thirty-five years. Heard and seen a lot of things in my time. Did you ever hear the old saying they used to pass around—about what happened when a chief had his first prisoner brought into his new office?" Watching the smoke of his cigar drift across the room, the younger man admitted he had no idea what the saying might be. The serious tone in Rogan's voice, when he replied, caused him to look across the desk. He saw that the red face was seri- ous, the gray eyes somber. "Well, they say that the first case a police head deals with, when he enters a new station, is always a murder. And you know, there may be something in it. I have known—" The sentence was not completed. There came the laughing voice of his inspector. A little smile played around Kent's lips as he spoke: "They may say that, Chief, but it won't apply to you. There is a man down below now who wants to see you. He ought to be in any moment. And it's no murder case coming your way. Just an anonymous letter." "Who is it?" was the growled out question. "Oh you know him. John Fletcher." The only response was a half-grunt. Rogan knew him; but the name brought forth memories of the man's father. There had been a real man: honest, intelligent, charitable. The city had lost an asset when1 the elder Fletcher died. As for his son, for POISON UNKNOWN ten years he had been engaged in spending the money his father had left. The comparisons between father and son that flashed through the chief's mind were not pleasant. Just as he was on the verge of voicing some of them there came a knock at his door, a sharp, determined knock. With a half-scowl on his face he asked the unseen person to enter. The man who passed through the door might have been forty; but he was dressed as if he were twenty-five. His white flannel suit was just a little too tight; and the slender cane, swinging upon his arm, caused Rogan to flash upon it a disapproving look. The man's face was thin, disagreeable, Kent thought, and a bit dissipated; but the air of satis- faction which it wore could not be improved upon. A very self-centered man, perfectly sure of himself and one, thought Rogan, whom you would not care to trust overmuch. He came to a halt beside the desk, to grin down at the stolid figure of the chief. A hand went up to smooth the little black mustache into place, fooled with it a moment, then went into a pocket to come forth with an extremely flat cigarette case. As he snapped it open a smile crossed the thin lips—the smile of a man very certain of his own importance. "Well, Chief," began the rather disagreeable, high-pitched voice, "one of your leading tax-payers has come to beg a favor. I feel you will grant it." Without a word Rogan's gray eyes passed coldly over the white suit, and rested upon the cane. His action caused the sallow face to flush a little, and a hand went up to his head to remove his hat. Lean- io POISON UNKNOWN ing a little on the table, he appealed to the chief. "Somebody, Chief, has been writing me letters. Silly sort of letters. And—" "Got them with you?" was the gruff retort. "One. Threw the first two away. Just thought at first it was some silly joke. Some of the boys trying to have fun with me, you know. But the one this morning rather upset my wife." A knowing smile crossed the thin lips. "You know how women are." "Let me see it," was the snapped-out command. Reaching into the inside pocket of his coat, Fletcher brought forth a folded paper. It was dirty, and after he put it on the desk he took out a colored handkerchief and carefully brushed his fingers. For a second Rogan watched the gesture; then his hand shot across the desk for the folded letter. It was an extremely soiled sheet of paper. Even after it was opened, and his eyes had taken in the three typewritten lines, Rogan sat wondering how the paper could have become so badly creased and so dirty. It looked as though someone had crumpled it into a ball. And the typewritten letters were very uneven, and badly smudged. "This is the third time we warn you. Youse in for trouble. Get you yet, won't be hard. Ain't much use to try and avoid it. Could get you at your dinner to- night." Three short typewritten lines—that was all. Un- signed, of course—every letter of this type he had ever seen (and there had been a good many of POISON UNKNOWN them) had been unsigned. It contained a threat, and a reference to a dinner. In general the letter was not unlike others he had seen; and as a rule they led to nothing. As he thrust it across the desk for Kent to read, Rogan raised his head to glance at the silent figure beside his desk. "What have you been doing?" he barked out. Fletcher's eyes opened wide in startled surprise. The thin face flushed; then the red faded away. So eager was his reply that he stammered out the first words: "Why—why—nothing, Chief. Can't imagine who might send me such a letter. Have not the slightest idea why. Unless—." A hand went waving out in a hopeless gesture. "Unless what?" "Well, you see, Chief, if you have a bit of money people get jealous, you know. Have all sorts of foggy ideas, odd thoughts, and such things. Might be some- body like that; that's all I can think of. But my wife is a bit frightened." The glance he received was cold and calculating. Rogan was thinking. The man might be right. He ran round with a rather wild crowd. The younger golf- club set to which he belonged were noted far more for their escapades than they were for their intel- ligence. Somebody might be trying to frighten him. And then, on the other hand, he had heard stories about Fletcher. He did not have the best reputation as to personal conduct. He asked about the other letters. There had been two others, he was told. They POISON UNKNOWN came by mail, to the man's house; and he had thrown them away, thinking his friends might be trying to frighten him. But his wife had seen this one, and it had frightened her a little. To all of the chief's endeavors to make him admit he had some idea who might have written them, the same answer was made. Fletcher simply threw out his hands in a hopeless gesture, shrugged his shoulders, and said he had no idea. "What do you want me to do?" Rogan asked at last. "Why, I was thinking, Chief, that you might send a couple of men up to my place tonight. Have a little dinner on, tonight, at eight. It would make my wife feel easier: that I know. And after all, I am a heavy tax-payer, and ought to ask a favor of you once in a while." Rogan's first impulse was to retort that large tax- payers thought they owned the city. The request for two men to guard Fletcher's estate during his dinner seemed unnecessary. He knew the man's place: a house on the high bluff just outside the city. The grounds were spacious, covered with trees, running back from a bluff which rose for seventy feet above the lake. It was the city's most exclusive residential section, though the chief had always thought it a rather lonesome place. What he might have said, if it had not been for the thought that flashed into his mind, would be dif- ficult to discover. He had no liking for the self- satisfied man who stood beside his desk. But he re- membered the old saying which he had quoted to POISON UNKNOWN 13 Kent: that the first visitor to the new office of a police chief brings with him a murder. And the thought caused his lips to set in a straight line. The word "intuition" would have had little mean- ing to Rogan. But he had great respect for what he called his hunches. There was a good deal more to police work than simply running down clues, acting upon evidence. Like every other police chief, Rogan would have told you that there was a thing which he could not explain, a feeling, an obscure warning that made him realize that evidence was not everything. Intimations came at times, defying all reason; and when they did, one must listen. Of course the saying he had repeated to his inspec- tor was simply a bit of superstition. But then, Rogan knew of times when it had turned out to be true. After all, Fletcher was not only the first person to bring a problem into his new office; he had also produced a threatening letter. No doubt the letter meant nothing at all; yet, on the other hand, it would do no harm to consent to his request. Two men sta- tioned on his grounds, during the dinner, would pre- vent anything from happening. Though when he said he would see that the men were sent Rogan knew, deep down in his heart, that they would not be needed. With a nod of agreement, Fletcher voiced his thanks and started across the floor towards the door. The letter had been replaced on the desk, and, seeing it, Rogan picked it up and put it in his inside pocket. Why he did this he did not know; for after all it should have been sent into the file room. After the 14 POISON UNKNOWN door closed he turned to Kent. "Guess he's been up to something. But you'd better send two of your men up there." He paused a mo- ment to say, half apologetically, "He does pay a lot of taxes, and it won't harm anything. Guess some- body was simply trying to scare him a bit." The inspector nodded; for he agreed with his superior. Fletcher had a good deal of money, but his type did not appeal. The letter had not impressed him. Without a doubt somebody was trying to throw a scare into the man; that was all, and nothing would come out of it. But Rogan was right. If Fletcher wanted two plain-clothes men to patrol his grounds during his dinner, why, they must be sent. He be- longed to a group which had a good deal of money and whose taxes were heavy. Voicing his thoughts he rose from his chair to leave the room. A glance at his wrist watch showed that it was four. With his hand on the door knob he turned, as Rogan's voice came floating across the room: "I suppose you will be around here tonight. I am going to have dinner with Harley Manners; so you will know where to get me." Kent nodded as he left the room. When the door closed Rogan rose slowly from his chair and walked to the window. For a while he glanced down at the lake. The wind was still high, the clouds low and black. It might rain before night, though he doubted it. The waves were beating against the end of the long public pier, and he saw the spray flung high in the air. Gloomy and depressed, he decided he would POISON UNKNOWN 15 go at once to his friend's, though dinner was not until after six. The friendship between the rough and unculti- vated police chief and the wealthy and highly in- tellectual professor of abnormal psychology had always been one of the things which the city had failed to understand. There were many things about Harley Manners that people could not understand. Why one of his social position and wealth should spend his days teaching, when he had money enough to do anything he wished, had long puzzled those who knew him. But his warm friendship for Rogan puzzled them more. It was a friendship that went back to Manners' boyhood days, and had increased as he grew older. On many occasions it was the advice Rogan received in Manners' library which had solved the problem that baffled the police. Rogan knew nothing about science, even less about that insight into the human mind which was Manners' life work. Yet he realized that without the aid of his friend he would have been unsuccessful in the solution of the three crimes that had been his hardest problems. It was a little after five when he walked out of the new headquarters, to stand for a second on the wide granite steps. Stretching away before him, the main street of the city lost itself between high, tower- ing buildings. Through this narrow canyon the wind swept like a leaping hound. A newspaper, thrown by a careless passer-by into the street, whirled in a fantastic dance over the court-house lawn. This was to his left; and beyond it he could just make out i8 POISON UNKNOWN the door to open, he happened to touch his coat just over the inside pocket. Something soft responded to the touch; and he wondered for a second what it might be. Then he remembered. He had put the letter Fletcher had shown him in his pocket. It should have been left at the station, to be filed away in the document room. But as he heard footsteps within the hall he smiled. It might interest Manners; anyway he would ask him what he thought of it. CHAPTER II Slowly pulling the sheet of paper from his type- writer, Harley Manners added it to the pile of manuscript upon the desk, then fumbled in a pocket for his pipe. Contentedly his long fingers patted the tobacco firmly into the worn bowl, then applied a match. As the first gray puff of smoke drifted out into the room, he leaned far back in his chair and smiled down at the typewritten sheets. All the long afternoon he had been quietly writing at the desk, which stood between the curving bay windows of his library. For many weeks he had been working there; and though he knew that the book, when completed, would interest few, yet it had given him a summer of fascinating work. A thousand people, perhaps, might read the words upon the type- written sheets of paper. That the book when pub- lished might overthrow every existing theory con- cerning witchcraft, and yet be of no interest to the world at large, did not bother him. The work itself, the new theory he had evolved, was the thing that counted. Leaning far back in his chair, he threw a long reflective glance over the room. Twilight had crept through the large windows, casting shadows into the dim corners. The glass-covered book-cases that lined the walls were now mere dim outlines, their thou- sands of books a solid mass of uniform color. On the 19 20 POISON UNKNOWN ■ walls the etchings, mingled with eighteenth-century colored French prints, were now scarcely distinguish- able. Only the twenty Rops, whose devilish sugges- tiveness leered down from the nearest wall, could be clearly discerned. He did not need to see this room; for its every detail was firmly etched in his mind. It was a place dear to his heart, the room in which he read, and worked, and dreamed: containing the books and etch- ings that he loved. Behind those glass-enclosed cases stood thousands of volumes, collected with care and discrimination. Long rows of books on popular su- perstitions, customs and folk-lore stood beside his- tory and psychology; and these in turn were flanked by one of the largest collections in the country upon crime. Almost every curious and out-of-the-way book could have been found in that long room. For a while, with closed eyes, he leaned back in his chair, thinking. He was the most popular pro- fessor the university boasted; but his popularity was among the students, not with the president or faculty. That one of his wealth and social position should care to teach had been discussed more than once in faculty meetings—when he was not present. That in his own subject, abnormal psychology, he was one of the leading authorities in the country was—if grudg- ingly—admitted. About Manners there was a great deal which both the college faculty and his friends failed to under- stand. Why, with the opportunity of living wherever he might desire, he should from choice reside in the lake city puzzled many. His wish for solitude, to- S POISON UNKNOWN 21 gether with a firm refusal to be part of the social life to which his position gave him entree, perplexed others. What they failed to understand was that Manners had been gifted not only with a keen brain, but also with a great curiosity concerning life. He had but one fear: the fear that he might not know enough about everything. It was this desire to know all the curious by-paths of human conduct that was responsible for his in- terest in crime. Behind the glass-covered book-cases stood a remarkable library. All the books dealing with the absurd and weird abnormalities of men and women, accounts of famous crimes and trials, could be found there. And this interest was far from an academic one. Three murder cases had been solved by Manners' technical skill. The sound of the wind howling around the house made him open his eyes. All afternoon the half-gale had shrieked at the windows, and it had been his idea that it would die away when the dusk came. But as the windows rattled at the blast, he placed the pipe on the stand and rose to his feet. Pulling aside the damask draperies he looked out into the gathering dusk. On the wide lawn the elm trees were swaying and rocking before the wind. A mile away, down across the fields, he saw the lake, a tumbling mass of angry water. Turning, the etched outline of the city flashed into his vision. By the sparkling gleam of lights— which must just have been turned on—the long line of the main street could be followed. Chief among the reasons why he had built his POISON UNKNOWN house upon the top of the hill had been this view. He would never tire of it; and the place was far enough outside of the city limits to give him the solitude and quiet he craved. On bright days there was always the sight of the gleaming lake, and a long vista of green fields. At night, when the city lights became stars of flame in the darkness, there was a beauty that brought peace to his soul. For a time he stood looking out of the window. Night was approaching; and though the wind was blowing stronger than ever, he anticipated that it would soon die away. A movement of his arm caused his eyes to fall upon the sleeve of his silk shirt. Time he was changing his clothes. It was his habit to do all his writing dressed in a very disreputable pair of flannels. White they had once been—but that had been a long time ago. Turning from the window, he went out to the kitchen to interview his housekeeper. Rogan was coming to dinner, and the chief would be weary and also a bit depressed. The dedication of the new police-station would have reminded his friend that soon he must retire, and that another would take his place. This was the reason Manners had invited him to the house, that within its peace and quiet he might relax. The housekeeper seen, he hastened to the second floor and into his bedroom. Water was turned on in the bath, and he began to whistle as he dropped his clothes to the floor. This bedroom overlooked the lawn, and within it the furniture was plain and simple. There were no etchings on the walls—though POISON UNKNOWN a picture did stand upon the dresser—the only pic- ture in the room. He stood, now, before it for a moment, and took it in his hand, as a little pathetic smile crossed his lips. It was a proud face he looked down upon: a head held high, thrown back a little, with a wistful smile lingering upon intelligent lips. The picture might have explained a good deal about Manners which his friends did not know; and when he re- placed it on the dresser and went to his bath he was unusually silent. It was while dressing that he heard the sound of the bell, and knew his guest had arrived. When he went down into the library, he found Rogan already seated in his easiest chair, with the dog lying a few feet in front of him. A glance took in the new uni- form; and he smiled as he saw the glittering gold badge. The smile caused a self-conscious look to sweep over the round face of the chief. As soon as the first words of greeting had been exchanged Manners excused himself to go to the kitchen. Left alone, Rogan's gray eyes swept slowly over the book-lined walls. There were more books in this room than in any other place he had ever seen, unless it be the public library. What they might all be about he did not know, and once he had asked Manners if he had read them all. The answer—yes —had rather stirred the unimaginative police of- ficial; and the sight of the book-lined walls always impressed him. But he liked the room, felt its peace and quiet stealing over him. It had been a long hard day, filled POISON UNKNOWN with ceremony, speeches, and noise: a day in which there had been always before him a reminder that his work was about over. Somehow it had made him feel that he was now an old man. And he did not like the thought. Dinner was served on the enclosed end of the veranda. The table, with its glittering silver and fine china, was very close to the windows. As Manners had expected, the wind had suddenly vanished; and the air was very still. Far across the fields could be seen a light: the steady flare of the light-house. Over the water, in the direction of Canada, a faint flash of lightning broke the darkness for a passing second. Down in the city lights were everywhere: all sorts and shapes of lights, shining from windows of offices and homes; and always the creeping brightness of the moving headlights of cars upon the street. It was a carefully planned dinner: chosen for the weary man who Manners knew would sit down at his table. A mixed vermouth came first, then a clear soup, a trout, and an endive salad, crisp and cold. Next was a duck, served with wild rice. A bottle of Romanee Conti, when poured into the large glasses, sparkled like a red ruby above the white linen. A simple dessert, with coffee, was followed by a little old brandy. The meal was a silent one, however; for between the two men there was a degree of friendship which did not require speech. But when Rogan pushed aside his chair to follow Manners into the long library, he knew that the feeling of depression which had been with him all the afternoon had vanished. A box of POISON UNKNOWN 25 stogies was discovered in the drawer of the desk, kept there for Rogan alone, and with a smile Man- ners placed it in the chief's hand. Sinking down into the easiest chair in the room, Rogan lighted his long, thin roll, then cast a reflec- tive look at his friend. Across from him, with a little smile upon his face, sat Manners. The gray suit which clothed the tall, lanky frame was of costly texture; and in the gay tie there sparkled a precious stone. For a while Rogan silently studied him: not- ing, as always, the high forehead, the keen eyes, the sensitive lips, the long artistic fingers. He liked this young man; and he knew his age to be the same as the number of his own years upon the police force. Manners bore the friendly scrutiny with a little smile playing about his lips. Rogan seemed more rested than when he had come, and the somber look had left the gray eyes. It should have been a proud day in the chief's life, for kindly words had been said regarding his long years of service. A year ago the local papers were leading a political fight to have Rogan thrown out of office. Today they had sung his praises. "Good deal of difference now, Rogan," he com- mented, "from a year ago." Taking the stogie from his lips, the chief nodded his head. After a moment's reflection the rough voice spoke. There came an admission that a great many fine things had been said about him during the dedica- tion ceremonies—followed by the sarcastic comment that they meant nothing. One day the police were praised, the next day nothing but evil was said about 26 POISON UNKNOWN them. Rogan's attitude told his host that even the pinning of the gold badge upon the blue coat had not impressed him. Manners changed the conversa- tion: "Have you booked anyone in your new station?" He was surprised by the effect of the harmless question. With a start, the stogie was jerked from the corner of Rogan's lips as the chief sat upright in his chair. The look he threw his friend was a startled one, as though the words had occasioned an un- pleasant train of thought. After a pause he spoke: "Harley, did you ever hear the old saying that floats round police circles—that when a chief steps into a new station, the first man to see him will bring a murder case in with him?" Manners slowly shook his head, smiling a bit. Rogan might be hard-headed and realistic; yet there was a streak of superstition in his make-up. The sight of a black cat could always give the chief an uneasy hour. The day the police car ran into a telephone pole, for instance, Manners spent an hour endeavor- ing to assure Rogan there was no connection between the accident and the fact that, an hour before it hap- pened, he had unwittingly walked under a ladder. This, however, was a new superstition; and he re- marked as much to the chief. Rather grudgingly he was assured that though it might be superstition it was yet a familiar saying in police circles. Leaning back in his chair, as the stogie was allowed to go out, Rogan commented upon the cases in which he had known the saying to prove true. There were not many, two in fact, but he produced POISON UNKNOWN them as if they were a hundred. When he had finished he was asked one question: "What was the first case you booked in the new building?" It was admitted that the first prisoner brought in had been simply a drunken driver. At the little smile, Rogan retorted that the tradition said "the first per- son to see the chief." He had not seen the first prisoner; that was a mere matter of detail for a desk man. But there had been a man in to see him, the first and only person he had yet interviewed in his new office. As there came no inquiry as to who it might have been, the information was volunteered: "John Fletcher was in to see me." The name made Manners smile. Fletcher was well known in the city, and as Manners thought of the man he realized the absurdity of what had been in Rogan's mind. Fletcher was simply the son of a man who had left a good deal of money for his offspring to throw away. There were many unpleasant traits in Fletcher's character; but crime in the usual mean- ing of the word could not be thought of. He was interested enough, however, to ask why he had wished to see Rogan. "He got an anonymous letter," came the answer. Rogan was reminded that anonymous letters were rather commonplace things, and as a rule meant lit- tle. Warming to the subject, Manners commented on the fact that almost eight-five percent of all such letters were written by women: neurotic, repressed women, wishing to injure someone, finding some psychological satisfaction in what they did. But gen- 28 POISON UNKNOWN erally such letters were meaningless, rarely leading to murder. A few cases there were in which anony- mous letters had figured in a murder. These, how- ever, had been largely warnings sent out by certain societies, whose membership consisted of people of foreign birth. "I have seen some funny letters in my time," began Rogan in a reminiscent mood. The look of interest on Manners' face led him to continue. "Knew a case where for five years, every Monday morning, the postman laid an anonymous letter on a man's desk. Got so after a while he would have felt hurt if it hadn't come. And who do you think was sending them to him all the time? His own wife. And then I got mixed up in a couple of cases where we dis- covered that the persons receiving the letters were writing them themselves. Women those were, and I don't just see it." The puzzled expression on the red face induced the professor to enter into an explanation. He re- minded him that the letters which the women had written to themselves would be violent and obscene. Nodding his agreement, the chief listened as he was given the psychological reason why certain highly repressed and neurotic persons are able to release their repressions by writing to themselves. Scientif- ically the explanation he received was correct; but, when Manners paused to light a cigarette, Rogan simply shook his head. It might all be true, and no doubt was, but after all it was beyond him. He started to voice this opinion, only to have Manners' words cut in ahead of him: POISON UNKNOWN "What sort of letter was sent to Fletcher?" About to reply, Rogan suddenly remembered. The letter itself was in the inside pocket of his coat. With- out speaking, he fumbled for the piece of paper. Bringing it forth he tossed it into Manners' lap, and waited for the comment which would come. As he took the badly creased bit of paper in his hands, Manners' first thought was that it was about as dirty a letter as he had ever seen. If it had been deliberately rubbed on the ground, it could not have been more soiled. The manner in which it had been folded interested him also. Twice it had been folded; then, seemingly, it had been crumpled into a tight ball. Nothing else could explain the multitude of folds and creases in the paper. The message itself appeared to mean nothing, though Manners noted that the letters in which it was written were unevenly spaced, and that the typewriter used must sadly have needed cleaning. At the station Rogan had given the letter but a glance, then tossed it across the desk to Kent. He was surprised, now, to see Manners rise and go to the desk with it. Opening a drawer the professor took out a large magnifying glass. For a few mo- ments he peered at the letter, turning the paper over and over: examining even the creases, which were black with dirt. When the examination was over the letter was handed back, and Manners sank down in his chair without speaking. "Well?" came Rogan's impatient voice. "That piece of paper tells a lot," was the com- ment. "I would conclude that whoever wrote it tried POISON UNKNOWN to disguise the class of society in which he moved. Of course he overlooked one thing, in fact two, which rather give him away." The letter had been replaced in the chief's pocket; but the last remark made him take it out again and give it a quick glance. For a moment he stared, then throwing back his head growled out a question: "Overlooked what?" "I mean this. Most anonymous letters are writ- ten by people who are afraid to sign their names, and who attempt to disguise their writing. In most cases the person receiving the letter knows, or has met, the one who wrote it. This does not apply, of course, to prominent people much in the public eye, whose mail is filled with letters from cranks. But the average anonymous letter is written by someone who, as a rule, knows the person to whom he is writing. Oftentimes the writers are known very well, and of course they try to disguise the handwriting, station- ery, and phraseology. Such an attempt was made in this letter; but in the very attempt the writer gave himself away. "You see," he said, reaching forward to take the letter from Rogan's hand, "the first thought would be that the writer of this letter was illiterate, careless and rather fond of dirt. But look at the paper. It's rag paper, an expensive brand, hard to find even in the better shops. Then look at certain words in the three lines. 'Ain't' and 'youse' are not used today even by the uneducated. See how dirty the thing is. What the writer did seems very simple." "What he did?" POISON UNKNOWN 31 "Yes. In writing the letter he wished Fletcher to think it came from someone outside his own social group. The sender used a dirty machine, spaced the letters badly, and tried to pick words he thought an uneducated person might us. He must have taken the sheet of paper and rubbed it on the ground, in the dirt. In no other way could it have become so soiled as it is. Not satisfied with that, he then rolled it up in a ball, in order that it might appear badly creased." Yet one thing was forgotten: he had used a grade of paper that is not only expensive, but is also a bit hard to find. I wager, Rogan, you might find the shop that sells this paper—rather easily; though that would give you no idea who wrote the letter." "What do you think this person was trying to do?" was the question. "Oh, just somebody trying to scare Fletcher, or have a little fun with him." "That was what Fletcher thought," was the re- tort. Manners nodded in agreement, remarking that no doubt it was someone in Fletcher's own social group who had written the letter to him. That it was of any importance he did not believe, though he ad- mitted there might be persons who would not feel too sad if some misfortune did overtake the person to whom the letter was written. Then a thought struck him: "Why did Fletcher bother to bring the letter into your office? There is little in it to make him feel excited: that is, unless he has some idea who might have written it." POISON UNKNOWN "His wife saw it," was the comment. "You see, this was the third letter he had received. He de- stroyed the first two, but his wife saw this one and got excited. They are having a dinner there tonight." The remark about the dinner was not clear to Manners; so Rogan entered into an explanation. He told of Fletcher's request that two men guard his grounds, shrugging his shoulders as he admitted that if it had not been for the old saying about the first visitor to a new police station he would have refused the man's request. His added remark, that he had sent the men because Fletcher was a heavy tax-payer, made Manners smile. The professor could picture an excited woman, reading into the three lines a threatened disaster. The admission of her husband, that there had been two other letters, would only deepen her feeling of terror. It was but natural that Fletcher should have come to Rogan and asked for the two men: there was nothing else he could do. Manners voiced this idea, with which Rogan rather doubtfully agreed. Then silence fell over the room. It was a silence lasting a long time. At peace with the world, rested, his mind at ease, Rogan allowed his eyes to travel down the long line of books. There was one section of the shelves upon which his glance remained for some moments. There against the wall, their covers bright splotches of color, were the books upon crime. All the world's famous criminal trials, accounts of famous crimes—from those well-known down to more hidden, obscure happenings—were upon the shelves. More than once the chief had POISON UNKNOWN anger. As the receiver was replaced on the hook there came a little click. After a moment the short, heavy figure appeared in the doorway. No longer was Rogan's face that of a man at peace with the world. Once more worried lines had leaped around the thick lips: lips now shut tensely. His gray eyes, like frozen light, looked over at his friend. As their glances met, Manners waited for the words which would come. "Harley," came the rough voice, its tone even, cold, and without expression. "That call was from Kent at the station. Something has gone wrong at Fletcher's dinner. Something—" So icy was the tone that Manners' mind leaped to but one thought—a thought expressed in his ex- clamation: "Murder?" For a second there was no reply. Instead of speak- ing Rogan looked over towards the windows. Through the curtains could be seen the blackness of the night. For a moment he studied the windows as though he had never seen them before. Then all at once he turned: "I don't know, Harley. Kent 'phoned that one of the plain-clothes men just called up to say that one of Fletcher's dinner guests has died—died very sud- denly, while at the table. Said there was something suspicious about it, though he doesn't know what it is." In the silence that fell, Manners reached into his pocket for his cigarette case. There came Rogan's voice again. This time behind the even tone could be POISON UNKNOWN 35 felt the tension in his mind. "I just told Kent to rush up there and take our police doctor. Told him to tell the men to allow no one to leave the house till we get there. Told him we would be at the place as soon as he is. That means you will have to drive me out. He says the man died very suddenly while at the table. Nothing out of the way that he knows about. But—" The big hands went sweeping out in a half-circle. What the gesture might mean Manners could not tell. But it was violent enough: the action of a man who had made up his mind. As Manners thought this, the chief spoke again: "Remember what I told you, Harley—told you of that old saying that the first visitor in my office would bring a murder?" As the last word rang over the room the chief turned, while his eyes swept the hall. Yes, there was his hat on the stand, just where he could reach it without having to take more than two steps. He would want it in a minute. But before he picked it up, he must speak again: "Maybe it's just a superstition. I don't know. That's what you and Kent said it was. But get this, Harley. Fletcher was the first man in my new office. He wanted two men to guard his grounds tonight. I sent them out there, and while they were on duty one of his guests died—died suddenly at the table. Now it all may be just a coincidence. But do you know what I think we are going to find before we get through with it? Do you?" Though he knew what the answer would be, Man- 36 POISON UNKNOWN ncrs had to return the question. For a second before replying, Rogan's cold, gray eyes met his own. There came one word—a word barked out with all the conviction within the police official's soul: "Murder." CHAPTER III There were three cars in Manners' garage. As he hurried across the grass, with Rogan at his heels, he decided to take the new roadster. It was the fastest he owned, and the police chief, he knew, wished to reach Fletcher's place as soon as possible. The old superstition must be playing through his mind, and though* to the psychologist this nervous uneasiness seemed absurd, yet he knew how disturbed Rogan must be. It was dark on the lawn, and the tall trees were scarcely distinguishable. Clouds hid the stars, and far over the lake played intermittent flashes of light- ning. The air was still, close, heavy, threatening an approaching storm. Beyond the fields, on the edge of the point running out into the water, could be seen the steady flare of the light-house. It took but a moment to run the long, low, road- ster out of the garage. Even before his foot went down on the starter Rogan was beside Manners, his hand clutching his hat. In the chief's mind there were no illusions as to what this ride would be. He had driven with Manners before, on occasions when speed had been suggested. And though he had said nothing, he noticed that it was the fastest car in the garage that was being used. Almost in the second they came through the open- ing in the hedge, the machine was in high. Just past 37 38 POISON UNKNOWN the house, the road turned to run down a long wind- ing hill. By the time they had crested the hill, and begun their curving descent, the car was beginning to pick up speed. Long before they reached the bot- tom Rogan had glanced soberly at the speedometer, and he blinked as he saw the swinging needle playing around the figure seventy. Not for long, however, was the speedometer watched. The chief had ridden with Manners be- fore, knew there was no better driver in the city. So slumping far down behind the wind-shield, he gave himself up, now, to his gloomy thoughts. Ever since Fletcher had walked into his office he had been un- easy. Just what it was he feared, he could not tell. But Kent's telephone call, with the information that a tragedy had occurred at Fletcher's dinner, had caused all his disturbed feelings to solidify into a suspicion. A man had no right to bring an anonymous letter into his office and then five hours later have a guest die at his dinner table. The car went skidding off the main highway to turn down a back road, one that ran in a straight line for five miles, then connected with the lake drive. Under the onrushing headlights the fields were a black, moving line. The machine swayed from side to side, and Rogan breathed a faint prayer that they would not meet anyone. They were going ninety, and it was fast enough. He stole a glance at his com- panion, noticed the long fingers gripping the wheel, then turned his eyes again upon the road, which seemed to leap up to meet them. Manners, though he saw every stone and rut in POISON UNKNOWN the road, was thinking as he drove. Rogan, he knew, was worried. Why the chief should have the wild idea that Fletcher's guest had been murdered was beyond him. Kent had said nothing about a crime, only that a guest had died suddenly at the dinner table. The anonymous letter, he supposed, was to blame for Rogaa's saying it would prove to be murder—the letter and that absurd superstition. It was an odd coincidence that one of Fletcher's dinner guests should die; yet such things did happen. Manners ran over in his mind what he knew about Fletcher. The man's father had been a much re- spected citizen, which was more than could be said of the son. Fletcher belonged to a younger social set. The group had money; but they lacked culture, and possessed neither intelligence nor stability. Their Saturday night dances at the golf dub, noted for noise and wild drinking, had driven the more con- servative members from the club on week-ends: a selfish group, whose escapades, to the psychologist, showed lack of balance and responsibility. Not a criminal group; it took something Fletcher's crowd did not possess to be that—it took courage. He thought of Fletcher. The man must be close to forty, though he dressed as if he were twenty-five. There had been stories about him, floating round the better clubs and business offices. For the moment Manners could not recall what they were. Nothing very bad, he concluded, mix-ups with women, and something about an inability to carry his liquor. He was unintelligent, of course, and selfish: a person who had been the inheritor of money, but who had POISON UNKNOWN not the ability to know what money could buy. He stopped thinking, to take his foot hastily off the gas and apply the brakes. With a sickening lurch the heavy machine skidded around a dog, who had paid no attention to their lights. As the car bumped back into the center of the road a muffled expression escaped Rogan's lips. It might have been a prayer; but it sounded too emphatic for that. On the lake road, ahead, could be seen the traf- fic, and Manners began to slow down. For a mile they would be forced to travel on the most popular highway of the city. It skirted the lake front, and though it was far from a pleasant evening there would be heavy traffic. High speed was over. A mile down the highway they turned to go in the direction of the water. It was a private road they entered, wide, with tall trees lining each side. Through the trees could be seen glimpses of stone walls; behind the walls were hidden large houses. They were in the most exclusive residential section of the city, a place of large estates, with the houses secluded behind high stone walls or well-trimmed hedges. Only occasionally could they see lights in the windows, cheery spots of brightness against the dark. At the entrance to a private driveway the road ended. Illuminated suddenly by their headlights, a pebbled drive could be seen curving away towards a large house. A high stone wall hid the yard, but they could see dimly outlined the tops of tall trees. On either side of the driveway was thick shrubbery, much higher than a man's head, and smoothly trimmed. POISON UNKNOWN The hedge ended before reaching the house, and the driveway swept around in a wide circle. As the car came to a crunching stop on the gravel, Manners noticed there were cars parked to his right—noticed something else: as his lights had swept round the drive, the shadowy figure of a man darted behind one of the machines. At least, that was his impres- sion. Something had moved—of that he was sure; though what it was he had been unable to discern clearly. For a moment, after the car stopped, they sat looking at the house. It was a long white building, with a veranda running across the entire front. The entrance was directly before them, and they could see the lighted hallway. To the right, in another room on the main floor, there were lights; but all other parts of the house were dark. Though they knew there were people within, yet from the car they could see no signs of life. Only for a moment did they look, for with a sud- den grunt Rogan flung open the door, pushed his hat back on his head, and climbed out. As he started for the veranda Manners turned off his lights, then followed. It was Rogan was reached the door first, and whose finger went pounding down on the button. Within the house came the faint ringing of the bell. They could see a light, though the frosted glass in the door prevented their looking into the hall. In a second came the sound of a hand fumbling at the knob; and when the door swung open a blue-coated policeman scowled out at them. POISON UNKNOWN As Rogan brushed his way into the house, a sound on the lawn made Manners turn. He had not been mistaken; he had heard the sound of a motor. There appeared to be little effort at concealment; for with a sudden roar an engine leaped into life, and he saw a machine come off the grass to turn down the drive- way—a machine that was picking up in speed every second. He watched the red tail-light until it van- ished around a curve, then stepped into the house. The policeman who had opened the door either had not heard the car, or was not interested. He was at the farther end of the long hallway speaking to his chief. Rogan's head was vigorously nodding, though he was not saying a word. Both men disap- peared into another room. In a second Manners was hurrying after them. The long hallway down which he hastened was very spacious. A beautiful stairway curved up to the second floor, and he noticed that there was a light on the landing. The furniture was all colonial, and he would have given much to own the chairs stand- ing along the walls. One thing was striking: the silence. Not a sound could he hear, except the noise of Rogan's footstseps ahead of him. There were two persons in the living-room, the tall raw-boned head of the Homicide Squad and a large man to whom he was talking. At the sight of his chief a relieved look crossed the face of the in- spector. They were all standing now by Kent's side, and the look he cast his superior was a doubtful one. "I did what you said," he began. "Got up here POISON UNKNOWN at once. Brought Bell with me. He is in the dining- room now. But what the—" "Never mind all that," broke in Rogan, turning with an impatient gesture to the patrolman. "I want to hear what Rice's got to say." "There's not much to tell, Chief. The inspector sent Mike and me up here, to sort of keep watch on the grounds, while those birds were at dinner. Nice lonely job it was. Dark as the devil out on that lawn, and nothing to see. I looked in through the windows every little while, but there was nothing out of the way there—just having a dinner. Then about nine, I hear somebody yell in the house, and hustle to the window and give a look. There was a man half- lying on the table. All the dames were yelling, every- body all excited. So I busted into the house. They said he had just flopped over and died. That's all there seems to be in it. But I got thinking—" An embarrassed smile passed over the policeman's face as he uneasily shifted his feet. It was Rogan's impatient voice that broke the silence. "Well?" "Well, Chief, I don't know why we were sent up here. But it's just not natural for a man to be laugh- ing one minute and be dead the next. I saw him through the window, laughing his head off every time I looked in. Then when I hear them yell, and bust in the house, why, there he is dead. And it didn't look right. Besides—" Again he hesitated. "Besides what?" "Well, he looked sort of funny to me. Don't know POISON UNKNOWN why. So I just called the inspector, and he said to keep everyone here and he would be up. So I did." For a moment Rogan's gray eyes soberly studied his officer. Then he turned to Kent. "What did you do with those people who were at dinner?" "They are out in the kitchen," replied the official, with a vague gesture of his arm and a shrug of his shoulders. "And they raised plenty hell when I told them they could not leave until you came." The voice became serious— "God knows what's in your head, Chief, but those people not only have money; but they also have lots of influence. They raved round a lot when I herded them up like a bunch of crooks. And I can't think what under heaven you are doing it for." "You don't have to think," was the growled re- tort. "That's one thing I did not ask you to do. Told you to see no one got out till I had looked this place over. Remember that letter I showed you?" Rogan's temper was displaying itself. Kent had been through many experiences with his chief. Like everyone else on the force he loved the old man; and he realized now that there was something dis- turbing him. His request that they rush to Fletcher's house, and investigate what was without a doubt a sudden though natural death, had puzzled him. But the mention of the letter explained it. The old man was again playing one of his hunches. And he knew he would have to play along with him. Manners had observed the worried look upon Kent's face and knew what the inspector was think- POISON UNKNOWN ing. Rogan might be getting himself into trouble, and into plenty of trouble, A man had died suddenly while at a dinner; and the chief was trying to find something mysterious in what was an uncommon but also a perfectly natural occurrence. No doubt the people who had been seated at Fletcher's table were, as Kent had said, both wealthy and well-known in the city. To be told they could not leave the house until police gave permission would not be much to their liking. Turning, Manners' eyes glanced at the long table he could see within the dining-room. It was covered with china and glassware and decorated with flow- ers. The wineglasses were half-empty. Chairs were pushed back from the table, and he could see a napkin lying on the floor. Evidently the people who had been eating there had left the meal half-finished and gone away hurriedly. As he gazed through the doorway he saw a man come into sight, and he recognized him as the young police doctor, Bell. Rogan had again turned to Kent; but Manners did not wait to hear what he was saying. Crossing the floor he hastened into the dining-room. As he came through the door, the police doctor hurriedly turned to see who was intruding. Manners knew the young physician rather well, and simply smiled a greeting. Then he turned to study the dining-room. It was a beautiful room, but only for a second did his eyes pause on its details; instantly they traveled to the most significant object there—an object that, as he looked, became awesome and sinister. In a chair, with his head bowed upon the 46 POISON UNKNOWN table, was a man: a man whose shoulders did not move, a man who would never again sit at a dinner table. The dark head was lying against the table, with hidden face pressed into the white linen. Out- stretched were the long arms, the fingers tightly clenched. A picture flashed into Manners' mind—of that man sitting there but a few moments before, among laughing guests. Sprawled out now over the table, the silent figure told that death had come suddenly, and without warning. Turning his eyes from the dark head, Manners glanced once more down the table. Eight chairs stood around it, at some little distance from the des- sert plates, as though hastily pushed back. Evidently the man had died before the dinner was over. As Bell did not speak, Manners continued to glance about the room. He noted that the table stood rather close to long, wide windows overlooking the lawn. There were five of these windows; and two of them were swung back. On the walls were a few fine hunting scenes, their gay colors making a spot of brightness against the light wall-paper. Close to a door which led to the rear of the house was a serv- ing table, and upon the buffet stood a number of bottles. "Well, what does it all mean?" came Rogan's voice from the doorway. The chief had just entered the room. His face wore a scowl, which vanished as his eyes took in the bowed head upon the table. For a second the thick lips set in a tight line, the gray eyes narrowed. Then, POISON UNKNOWN 47 as he moved across the floor, there came his second question: "What is it all about, Bell? What did he die of?" The doctor was a young man. He had taken his office as a means of securing experience before en- tering into private practice. An unusually efficient doctor, Manners had often told Rogan, far superior to the usual medical man doing police work. He ex- pected a quick, decisive answer. To his surprise it was several moments before Bell replied. Instead of speaking, the doctor walked to the table and gently lifted the bowed head. As the shoulders were raised, there came first the sight of a wide ex- panse of white shirt front, then the little black tie. As though not wishing them to see the face until he was ready, Bell had bent forward as he raised the head upright. Supporting it in his hands, he stepped aside. One quick glance at the white features, twisted a little by pain, and Manners gave a sudden exclama- tion. He knew the man. So did Rogan. It was Dr. Langdon, the child specialist, one of the best-known physicians in the city. Unmarried, quiet and scholarly in his tastes, he was the last person Manners would have expected to be at a dinner in Fletcher's house. But he had been. And that white, silent face, whose eyes still bore a startled look, would never smile again. An astonished grunt escaped from Rogan's lips as he recognized the dead man. It was even worse than he expected. This man was not only well-known; he was one of the best-liked physicians in the city. There 48 POISON UNKNOWN would be big headlines in the morning papers. As he looked at the cold intelligent face, all the forebod- ings in his mind leaped into his voice. "What was the matter, Bell?" "Well," came the slow, dry retort, "he seems to have died." An impatient oath leaped from the chief's lips. "What of?" was the sharp query. Very gently Bell allowed the head to fall back upon the table. Then, with a puzzled expression upon his thin face, he looked soberly down at the bent shoulders. The look surprised Manners; for in it was a mixture of doubt and wonder. When he did reply to the chief's impatient question Bell's voice was slow and hesitating: "Well, Rogan, offhand I should say it was a stroke. He must have died very suddenly—that's evident from the looks of the table. It appears to be a natural death, only—" Like a dog pointing a partridge, Rogan leaped at the last word: "Only what?" "Just this, Chief," was the reply—and the voice was a little puzzled. "If it was an embolism, a clot of blood hitting the brain and producing a stroke, then he died pretty quick. Of course oftentimes they do, though it seems here that death was very rapid. I have little doubt that's what it was. Only—" Again a pause, as if the young doctor were trying to pick his words carefully. Impatient, the chief started to speak, but closed his lips when Bell con- tinued. POISON UNKNOWN "You see I knew Langdon. For a busy, well-known specialist, he always was rather kind to me. And he would be the last man in the world I should think would have a stroke. He always seemed in perfect health." He paused, slowly shaking his head. "But of course you never can tell. I noticed he was very pale when I first examined him, his skin moist and cold. The body seems to have become rigid rather rapidly; but that means little." "It means an autopsy," broke forth Rogan. The doctor turned and looked at his chief. The stern glance he received was not unfamiliar to him. Stubborn determination was on the red face, a half- scowl around the tight lips. Bell shrugged his shoul- ders. The old man had made up his mind, though what he was insisting upon would be an absurdity. Langdon had died while seated at the dinner table of his host. The occurrence was sad, much to be re- gretted, but of course the death was a natural one. An autopsy would not only be absurd, it would make a lot of talk. He voiced his opinions. Rogan was reminded that he was not dealing with people devoid of influence and power. An autopsy would make the city talk, wonder whether there was any hint of a crime. When the chief was forced, as Bell assured him he would be, to tell the papers that the death had been a natural one, then the fireworks would begin. Toward the end Bell became even eloquent, and with ironic sarcasm in his voice demanded if Rogan thought he knew more about medicine than his doctor did. His face expressionless, the chief listened. When POISON UNKNOWN the doctor paused, more because he was out of breath than for any other reason, the police official only gave him a long searching look. Very sarcastic was the rejoinder that came, reminding the doctor that, after all, he would have to take his orders from his superior. He was going to have an autopsy, no mat- ter what Bell thought about it. And his next words were a command—to arrange that the body be taken to the proper place. Rogan knew what the men in the room were think- ing. There was much truth in what Bell had said. Fletcher and his guests did have influence, and the autopsy would make a great stir. In a sense there was no reason for one. Tlie doctor had said the death was a natural one. Yet Rogan had not failed to notice the hesitancy in his voice, and it had made him remember the old superstition. Besides, there was an tmeasy feeling in his own mind: a warning that all was not well. What caused it he did not know. It was a feeling that had come over him on other occasions. And whenever he had followed the warning things had gone well for him. At the farther end of the room a door was sud- denly thrust open. For a second there was a glimpse of a butler's pantry. A face looked anxiously into the room—that of a policeman. His eyes fell upon his chief, and in a loud whisper he said he wished to speak to him. With a shrug of his shoulders Rogan crossed the floor to pass through the door. As the latter swung back into place behind him, Maimers turned to Bell. There was a disgusted look POISON UNKNOWN on the young doctor's face, and as the glance of the professor met his own he slowly shook his head. It was an expressive gesture; that of one who realized from sad experience in the past that Rogan would have his own way. It occasioned a question from Manners: "You think it absurd to have an autopsy?" There came a long look at the silent figure slumped over the table. Then the doctor spoke. "Professor, we were told when we got here that there were eight people at this table. Suddenly Dr. Langdon gave a cry, and a moment later fell over— dead. There is no hint of anything mysterious in his death. I will admit the setting is unusual; and it's odd it happened to be him. But such things do take place. And everything I can see points to his having died from a stroke. Only—" "Only you are not certain," was the retort. "No," was the grudging admission, "I am not certain that it was a stroke. I don't like the way the corners of his lips are pulled down. But if you think I have any idea that it was not a natural death, you are all wet. Rogan's just got one of those hunches he loves to talk about, that's all." The doctor was reminded that the chief had not forgotten Fletcher's receipt of an anonymous letter, warning him that he might be in for trouble. Bell nodded, evidently having been told of the letter by the inspector. Then he retorted: "Sure, that's the thing bothering the chief. But the old boy forgets it was Fletcher who was going to get 52 POISON UNKNOWN into trouble, not one of his guests. Yet because, by sheer coincidence, Dr. Langdon died at Fletcher's dinner, Rogan goes crazy for an autopsy." The tone was sarcastic. Seeing that Bell was thinking of the work ahead of him, Manners walked away toward the end of the table to stand directly behind the bowed shoulders of Dr. Langdon. Gravely he glanced down the length of the table, as his eyes narrowed. One odd thing about that table, he thought. Dec- orations and fittings: everything one might expect. But one thing seemed out of place. The head of the table stood very close to the center window. There had been six guests. It was the custom for host and hostess to sit at either end of a dinner table. Yet Langdon's body was in the chair Manners would have expected Fletcher to occupy. As he moved closer to the silent figure, the profes- sor felt something crunch under his feet. Stepping aside, he looked down at the rug. For a second he was unable to detect anything; not until he bent down could he distinguish the white, powdery substance on which he had stepped. Sugar, was his first thought; but when, reaching down, he ran his hand over the rug, he was not so certain. The substance was a bit too coarse and rough to be sugar. Whatever it was, it covered several inches of the rug. The sole of his shoe had ground the substance into the fabric. In his pocket there was an envelope, and, obeying some instinct, he sank down on one knee and managed to gather a few of the white crystals POISON UNKNOWN between his fingers. It was rather difficult, for they were almost a powder, and there was not much of it. He felt a little embarrassed as he rose to his feet, but noticed that Bell had not observed his action. Bell would have had no time to comment on it at any rate; for Rogan had come slamming through the door. Something had roused him. There was an angry flush on his face. His glance swept quickly from Manners to Bell, then passed to the door lead- ing into the living-room. At the question he barked forth Kent hastened to his side. "How many persons did you say were at this din- ner of Fletcher's?" "Eight." "You told them they must all remain here until I said they could leave?" He was informed that the inspector had com- manded the two policemen not to allow anyone to leave the house until the chief arrived. The guests with their host and hostess had been sent to the kitchen; and with a hint of sarcasm in his voice Kent assured his superior they were still there. The re- sponse to this remark was a long, cold, angry look. "They are?" came the icy comment. "They are? Well get this, Kent. You bring Fletcher into the dining-room. Go out and get him yourself. And when you get in that kitchen count the people out there. Count them well!" "What do you mean by 'count them'?" Rogan's hand plunged into the pocket of his coat, searching for one of the stogies he had taken from POISON UNKNOWN the box on Manners' desk. The end was snapped off with a vicious bite of the white teeth; but the stogie was not lighted. Instead: "There were eight at the dinner. Dr. Langdon is dead. That leaves seven. Out in that kitchen there should be seven people—should be! It happens only six are there. One of them has vanished." CHAPTER IV Though it had nothing to do with what had just been said, an old Italian proverb flashed into Man- ners' mind: "The Devil knows how to make the cup, but can never make the cover fit tightly." An absurd thought, and why it occurred to him he did not know. Was there even the slightest chance that Rogan might in the end discover that his suspicions had some foundation? Then came another thought. He recalled the sound he had heard as he entered the house. Once again he saw the darkly outlined car sweeping off the grass and into the driveway. Rogan had said that one of the guests had vanished. Who- ever had been driving that car had been in a hurry to get away. Turning, Manners told the chief what he had observed. With an uneasy frown upon his face, Rogan lis- tened. All afternoon he had been feeling restless. Just now he was far more than restless—he was nervous. Everything was going wrong. If it had been Fletcher who was found dead he would not have been greatly surprised. But the doctor— And he stopped to remark that it would at any rate not be a difficult task to discover which one of the guests had disobeyed his order not to leave the house. Then he snapped out a sharp command to Kent. The inspector, with a short nod, hastened in the direction of the kitchen. With an uneasy shrug of his 55 56 POISON UNKNOWN shoulders, Rogan observed the door swing to behind him, then walked into the living-room. Manners watched him cross the floor and pass through into the hall; then saw a light spring into being beyond. The room the chief had entered was a library. Turning to the scene behind him once more, Man- ners looked again at the table. The still shoulders, the dark head lying there against the mahogany, made his lips tighten. If there was one man in the city whom he would not have expected to die at Fletcher's table, it was the famous child specialist. And only a moment ago the chief had snarled out that one of the dinner guests, despite police orders, had vanished. The sound of a voice drifted through the closed door: a high voice, its tone shrill, querulous, angry and complaining. It was carrying on a one-sided con- versation; for there were no answering words. Even after Kent pushed open the door, to half-shove the man in front of him into the room, Fletcher's voice was still going on. There seemed little doubt, judg- ing by the way his tongue slurred and tripped over certain words, that he had drunk a bit too much. He took but two steps into the room; then re- treated to lean against the wall. The white shirt of his dinner suit was ruffled; his hair was in disorder. Well-waxed, however, was the tiny black mustache; and the small eyes threw an angry, uneasy look over the room. As they fell upon the silent figure at the table, Manners noticed that Fletcher gave a little shudder. Only for a second did his glance remain on the POISON UNKNOWN 57 table. Turning his eyes away, he looked coldly toward the doctor, then raised his eyebrows a trifle as he saw Manners. Though he knew him, there was no sign of recognition. Instead, turning his back upbn the three men, Fletcher walked to the buflet. With an eager hand he reached for a tall glass; and the Scotch he poured from one of the bottles was enough for three drinks. Throwing the glass down, his hand reached again for the bottle, hesitated, then fell to his side. With a sudden motion he whirled about. "What in hell does all this mean?" was the snarl- ing question to Kent, followed by a nervous gesture with the hand still holding the glass. "It's bad enough to have a guest die at my dinner table, with- out you damned fool police coming in and ordering my guests around as if they were a bunch of crooks. Where do you get that sort of stuff? You are not dealing with people who will allow you to get away with any rough stuff." Kent made no reply. After all, this was Rogan's party, not his. And the old man was going a bit fur- ther than the occasion warranted. Fletcher was an- gry, and deep down in his heart Kent did not blame him. The death at his dinner table of one of the distinguished physicians of the city must have been a shock. To have the police come rushing in, treating a natural death as though it were a suspicious one, refusing to allow one's dinner guests to leave the house—it was not the sort of thing to make a man like Fletcher feel happy. With relief, the inspector heard the commanding voice of the chief from across the hall. 58 POISON UNKNOWN In obedience to the voice, with Fletcher in the lead and Manners bringing up the rear, they crossed the living-room, to enter a room on the opposite side of the hall; Bell alone remaining behind. It was a small room, with book-cases on three sides, and to Manners' surprise they were well filled. Someone in the house did some reading; though he felt certain it could not be the angry man who had walked into the room ahead of him, and was now standing directly in front of the chief. For a second Rogan's cold glance swept over the raging figure before him. Weight about a hundred and forty-five, in poor physical condition, and de- cidedly angry—so Rogan summed him up. Not much color to his face, and it would do him no harm to lay off liquor for a while. As he thought this the chief suddenly wished he had a drink himself. He needed one; it would do him good. Fletcher was angry, his flushed face told that, and he'd best be careful what he said to him. After all, this man did have a good deal of power in the city. "What in—" began the high voice. "Only want to ask you a few questions," came the chief's interruption. The mildness of his tone made both Manners and Kent smile. "Only want to ask a few questions. Maybe we'd better sit down to talk." It was evident for a second that a vicious retort was trembling upon Fletcher's lips. Then, with a half-shrug of his shoulders, he walked over to a sofa. For a moment, from his seat, he watched the three men find chairs, which they brought close to the desk in the center of the room. Then, as though sud- POISON UNKNOWN 59 denly remembering his wrongs, he burst into speech once more. "What in hell do you mean, Rogan, by telling my guests they can't leave the house till you say so? One would think we were a bunch of crooks." "No," was the slow retort, "not that. But you know, Fletcher, you wanted two men sent up here to see that nothing happened at your dinner. Well, something did happen—Dr. Langdon died. Now tell us all about it." There came a moment's silence. Fletcher's hand searched into the inside pocket of the dinner coat, to find a cigarette case, which he nervously snapped open. As the odor of the Turkish tobacco filled the room, he spoke. "There's not much I can tell. Had a little dinner oru Langdon was one of the guests. All at once, toward the end of the dinner, he gave a little cry, and a minute later slumped down on the table. Of course the shock of finding he was dead made some confusion. Then your policeman came bursting in, and told us he was calling you. But all I know about it is that he just sort of fell over, and died." Rogan nodded, as his restless hand started to reach into a pocket for a stogie. He realized that Manners and Kent disapproved of what he was thinking: that there was something mysterious about the doctor's death. He also realized that he disliked the well-dressed man sitting on the sofa. There seemed, however, nothing more he needed to ask Fletcher. He cast an imploring glance at Manners. The professor came to the rescue. Had Fletcher 60 POISON UNKNOWN noticed any appearance of illness in the doctor? And he had mentioned a sudden little cry; what had he meant by that? When the reply came, Fletcher's voice was icy. It was evident that he resented the source of the ques- tion. Before speaking, he carefully placed one knee over the other, then looked down to see if the sharp crease in his trouser leg had been harmed. "Saw nothing out of the way in his appearance," came the admission. "He did make a little cry—all at once—as if in pain. That's all I can tell you." Manners fumbled for his cigarette case, felt its cool surface, then allowed it to remain in his pocket. "Just one more question, Fletcher," he apologized. "Stupid perhaps to ask it. But how did it happen that Langdon was sitting at the head of your table? Un- usual, you know, for any but the host to sit there." A puzzled look swept Fletcher's face. "Oh yes," he said. "I remember. I got up to turn on the radio. Suggested he might like to talk with Clara Under- wood, who was sitting on my right. That's how he happened to be in my chair. I took his." "Which one of your guests disregarded my order not to leave the house?" came Rogan's impatient question. Fletcher gave a sudden start. There was no doubt about the surprise which played across his sallow face. A nervous hand reached up to feel of the little mustache. His eyes opened in startled astonishment —as though he did not comprehend the chief's meaning. "Left!" was the shrill exclamation. POISON UNKNOWN 61 "Yes. Who sneaked away? One of them drove out of this yard just as we came into the house," came Rogan's impatient voice. "Who was it? And why did that person go?" Rising slowly to his feet, Fletcher stared at the police official as though he doubted the sincerity of the question. One quick look at the stern, set face, and there came a slow shake of his head: "I can't tell you. I know Billy Hardy went into the butler's pantry, saying he wanted a drink. Come to think of it, I don't remember that he returned. But if he sneaked out of the house I can't tell you why he did it. Haven't the slightest idea. Funny thing to do." Kent crossed to the chief's side. As they started a low, whispered conversation there came a muttered remark from Fletcher that he needed a drink, and he hurried from the room. Only for a moment did the two officials speak, then with a little understanding nod Kent turned to hasten out into the hall. A second after he had disappeared Fletcher returned. He did not come far into the room. There was a tall glass in his hand, two-thirds filled with Scotch. He moved his hand so that the liquid swirled in the glass, and his little eyes soberly followed the revolv- ing fluid. Then, with a quick motion, the glass was raised to his lips, and the drink gulped down. Sud- denly he started to laugh. It was far from a pleasant laugh. Behind the shrill inflection one could hear hatred. It was evident that the last drink had not been needed—the smile that crossed the thin lips was fatuous. Suddenly he turned to Manners, with a vague gesture of his right arm. 62 POISON UNKNOWN "Tell you something, Professor," volunteered the sly voice—and he lurched a little as he spoke. "Tell you something. First time you ever visited my house —first time. You know, I feel awfully sorry over the doctor's death. But I never invited him, never in- vited him to dinner.. He's my wife's friend. She asked him. I—" A silly smirk crossed his face, as he tried to throw back his shoulders. "Never did like him very much. He was too sancti—sanctimous. Told me once I ran round too much, drank too much. 'Lazy' he called me. Think of that I" He made a wide circle with his arms. "Pine man, though. Doctor a big man. But too sanctim—sanctimous." There came a grin, as for the third time he struggled with the word, then burst out— "Oh, you know what I mean. Too strict and all that sort of thing. Funny he'd come to a dinner I give, and then die. Funny thing that. If—" The rambling voice died suddenly away. His guests were coming into the room. In the lead were three women, whose low-cut evening gowns showed shoulders pale as their faces. In the rear fol- lowed the one man, a short tubby man, with a big head and flaming red hair—a man whose round fat face was working nervously as his eyes threw one searching look at the police. Tommy Davidson was well-known chiefly because each year he managed to figure in a serious automo- bile accident. No one could ever know as much as Davidson thought he knew, or be as pompous as he was on certain occasions. As Manners saw him come through the door he smiled to himself. Once, when *1 POISON UNKNOWN 63 called as a psychological expert in court, he had testi- fied that Davidson belonged to the type that never should be allowed to drive an automobile. As the little eyes flashed a quick look in his direction, he knew the statement was being recalled. Two of the women Manners knew, though they did not give any sign of recognition. There was Davidson's wife, a tall well-formed brunette—whose shoulder-straps threatened at ever moment to slide from her shapely shoulders. Her face was handsome enough; though around the painted lips dissatisfied and petulant lines showed. Behind her was Mary Moorhead. Every one in the city at least knew about the tall, angular woman called Mary Moorhead. Her en- thusiasms were many and varied, from badly played roles at the Little Theater to poorly done book- reviews at the Book Forum. With a quick temper, unbounded conceit, and a not over-truthful tongue, her father's fortune allowed her to bully her selfish way through the social life of the city. There was a half-sneer on her narrow lips, as she coldly surveyed the room. The third woman Manners did not know. She was by far the best-looking of the three, with hair of a shade between auburn and blond. She might have been over twenty-five, though the voluptuous body, plainly showing in the tightly fitted evening dress, seemed younger. Not an over-intelligent face, thought Manners, and the sensuous lips trembled a little as she came into the room, as though she were afraid. 64 POISON UNKNOWN As Rogan slowly eyed the group his heart sank. He was recalling the remarks of his inspector. These people, with their wealth and social position, could not be treated as could the criminals whom he saw daily. That they were all angry was clearly apparent; and that he would find it rather difficult to explain his reason for refusing to allow them to leave the house was becoming every moment more evident. He had allowed a foolish suspicion to run away with him. He was about to speak, when there came a little sound at the door. Another woman had come into the room. Man- ners', as he turned and saw Fletcher's wife, had to stifle a surprised exclamation. He had kept very much to himself in the last two years, and when in the city had been hard at work in his library. Social affairs had been neglected, and though under or- dinary circumstances he would have met Ann Fletcher long ago, his first sight of her was as she came slowly into her library. A very beautiful woman, he thought, tall, with a perfectly proportioned figure which her simple black velvet evening gown showed to perfection. But it was her face that interested him: a sensitive face, with clear honest eyes, and finely shaped lips. There was intelligence there, and breeding, which showed in the proud way she carried her head. Yet in the brief moment she stood motionless in the doorway he saw she was both unhappy and troubled. Though the dark head was held high there were shadows under the gray eyes and, he thought, traces of tears. As her glance slowly swept the room, 66 POISON UNKNOWN The low voice trembled into silence. Rogan's eyes swept the room. No one seemed to wish to add any- thing; though he saw several heads nod in agree- ment. Perhaps it was best to ask no more questions. After all, there was nothing to be discovered. But one thing more he did wish to know. "Can any of you tell me why it was that one of your number left the house, despite my orders for all to stay?" Somebody gave a nervous little laugh—one of the women—though which one the chief did not know. It was stifled almost as soon as it began. But it was Davidson who leaped into speech; and Rogan no- ticed that his wife, who was standing beside him, laid a warning hand on his fat arm. "He just beat it," began the high voice. "Walked into the pantry saying he was going to have a drink. Must have climbed out of the window. We heard his car a few minutes later." "Why?" Rogan demanded. There came a little icy laugh from Mary Moor- head. "We are not mind-readers," she said ironically. "Do we have to be? I suppose he just got tired of be- ing told he could not go." Silence fell. Manners saw Fletcher's wife lean wearily against the wall. The white shoulders drooped as though she were very tired, weary and sick at heart. The fine face trembled a little, then suddenly her eyes met his—deep, clear eyes, honest and searching. For a moment their glances held; then she looked away. It was Rogan who broke the stillness: POISON UNKNOWN 67 "You can go now. I am sorry I had to ask you to remain until I arrived. But it was necessary." They turned to rush out of the library. In the confusion Fletcher's voice was heard, a little shrill and excited; and he was having difficulty with the words. "Now it's all over we'd better have a drink. That includes the police, and—" he paused, to add sar- castically—"Professor Manners." No one replied. The women were leaving the room. Davidson had gone close to Fletcher's side and whispered something in his ear, which made them both laugh. With a half-scowl on his face, Rogan watched Fletcher and his guests hurry out of the room, and knew by the sound of an opening door that they had not gone into the dining-room. Lang- don was still there—and his silent figure was some- thing they would not care to see. As the last one vanished, the chief reached into his coat and found a stogie. With a vicious click of his teeth he bit off the end. The explosive manner in which he blew forth the first cloud of smoke showed his disgust. It did not need the words he poured forth to tell Kent and Manners that he was also angry. "People like those," he started in, "give me a pain —a big one. Think they own the earth. But there's nothing more I can do—nothing I have a right to do. So I'm just going to let Bell hurry through the autopsy." Kent protested. "But Chief, you do not need one. It was a natural death. You heard what they said." 68 POISON UNKNOWN "Yes—they said nothing. But get this, Kent. It was a sudden death. And the law in such cases allows an autopsy by the coroner. That's why we had our own police doctor made coroner—so it would be pos- sible to look into sudden deaths of this sort. I am going to have an autopsy—even if you don't like it. The doctor was a big man; and it won't hurt anyone to discover why he flopped over and died. He died too damn quick to suit me." A pause—in which the red face flushed, and a half-oath. "What's more, I am going to find out why that young pup sneaked out of the house." Fifteen minutes later Manners came out of the front door to stand for a moment looking over the lawn. It was a place of shadows filled with pools of darkness, the shrubbery forming large squares of blackness. Save for the slight breeze in the trees there was no sound. There was still lightning, though the storm was far over the lake, and apparently would come no nearer. A faint wind had sprung up; and the air was cooler than when he had entered the house. Rogan had refused his offer to drive him back to town, say- ing he would remain until the body of the doctor had been taken away. Feeling there was no reason for his remaining Manners had said good night. Stepping off the veranda he paused, for a moment, to get his bearings. Fletcher must have a rather large estate, he thought. To his right stretched the yard, a mysterious place of shadows and darkness reaching to the top of the high bluff—which at this point on the shore ran for almost two miles along the lake POISON UNKNOWN 69 front. To his left the driveway curved towards the road outside the stone wall. In a sense it was a lonesome place, rather isolated, the other houses some distance off. Beyond the stone wall, at least a thousand yards away, shone the lights in the road. But there were no lights in Fletcher's grounds. And it was impossible to do more than dis- tinguish the dark outlines of the trees. Instead of going to his car the professor turned, to step on the soft, springy grass. Reaching the end of the house he walked a few yards over the lawn, to find himself under the shadow of tall elms. If he con- tinued he knew he would reach the top of the bluff, and that seventy feet below him would be the lake. But he turned to his left. Walking about forty feet, he paused to look at the house. The first floor was now lighted, its win- dows bright oblongs against the darkness. In the second story there was but one lighted window, well toward the front of the house. From where he was standing he could look directly into the dining-room, through a large bay window made in five sections, two of which were swung open. He could see the long table, the white linen and silver—see also the dark, still form at the end of the table. And he noticed the moving figure of a man in the room. As the man came forward into his vision he knew, from the blue uniform, that it was a policeman. For a time Manners stood motionless. His first thought had been to cross the grass and stand di- rectly under the window. But that would be a useless thing to do. He knew what was in that room. From POISON UNKNOWN where he stood there was nothing to break the view. True, under the window there was shrubbery; but it was not high; and the tree, only a few feet from the house, was not in his line of vision. Within that house one of the most distinguished men of the city had suddenly passed out of life. Death is the fate of every man; Manners did not forget that. But back in his mind was another thought, mingled with a vague wonder. Langdon had been a scholar, a man wrapped up in his profession. The guests at Fletcher's dinner would not be the type of people the physician would choose for his friends. Nor could he picture Fletcher as ever be- coming a confidant of the doctor. This thought was with him as he drove home. It was late, with little traffic on the road, and he could have driven as rapidly as he wished. But the car moved slowly. He was thinking. Odd, indeed, that Langdon should have been at that dinner. No one there worthy of a moment of the doctor's time. Then he remembered Fletcher's wife. Her clear-cut, sensitive face flashed into his memory. Intelligence there was there, and also un- happiness. He wondered how she found life with the man whom she had married, why she had married him. . . . He gave up thinking after a while, knowing his thoughts were leading nowhere. Had it not been for the anonymous letter Fletcher had brought into the police-station Rogan would not have been disturbed. But the chief had been led to expect that something would happen—only he had expected that it would POISON UNKNOWN 71 happen to Fletcher. When he had put the car in his garage the dog came leaping over the grass, to thrust a cold nose in his hand. Together they walked into the house, and the Airedale followed him gravely out to the kitchen. Here Manners opened a cabinet, found a squatty bottle, brought out a stubby one of soda, and mixed a long drink. The mixture was carried back into the library, and—with a sigh—he sank down in his easi- est chair. He was tired, and a little disturbed. The quiet evening he had so carefully planned for the chief had turned into a night of horror. For horror was the only word to express his feeling over the death of the doctor. It had been a shock, and part of the shock had been his startled wonder at the place where the doctor died. Sipping the Scotch, his eyes wandered over the room. Slowly they passed down the long line of book- cases, lingering for a moment at the section that contained his collection upon crime. There were hun- dreds of volumes in that section, the stories of every nation. But there was nothing in any of them that would meet the situation he had just encountered. The glass drained, a cigarette lighted, he smiled. He could picture Rogan, ending what should have been a happy day, in a spirit of unrest. The chief had played one of his hunches; and it was very apparent it had gone wrong. But the stubborn old boy would never admit he had been mistaken—though Man- ners knew that, even now, he was wishing he had gone a bit slower. POISON UNKNOWN He stopped thinking, to lean back, in his chair with eyes closed. It was very peaceful in the long room; its restful quiet came sweeping into his soul. For a long while he did not stir; then suddenly a hand reached down to linger for a moment on the head of the dog, who was asleep by his side. At last he rose to his feet. It was time for bed. As he went up the wide, wind- ing stairway, he was sure of one thing. He would hear from Rogan tomorrow. That was a certainty. Whenever the chief was troubled Manners always heard from him. With that thought in his mind, he began to prepare for bed. CHAPTER V Timothy Rogan scowled down at a disordered desk. Twenty-four hours in his new office had resulted in one thing: the surface of the desk was cluttered with a mass of papers and reports, a careless litter that looked as though it might have been accumulating for months. The disorder rather pleased the chief; it was the only thing in the room that reminded him of his old office. There were, however, two objects on the desk that made his lips tighten. In one corner was tossed the morning paper, while directly in front of him, crum- pled into a tight ball, lay the noon edition of the Evening Star. He did not have to pick them up and re-read their news columns to recall what was on the first page of both papers. Heavy black headlines had leaped forth to hold his attention when he first looked at them. In the morning paper the headlines announced the sudden death of Dr. Langdon. The early afternoon edition had begun to hint at something else. In the morning paper the account of the sudden death of Dr. Langdon at Fletcher's dinner party had not disturbed the chief. Many columns had retold the story of the physician's prominence in the social and professional life of the city. They were news stories revealing clearly the warm place the doctor had* filled in many hearts. 73 POISON UNKNOWN This account had not disturbed Rogan. No refer- ence had been made to the fact the police had gone to the house, nothing was mentioned about the au- topsy. But the afternoon edition made up for what had been omitted in the morning. In headlines that ran across the page, it had shrieked to an eager pub- lic that Rogan had demanded an autopsy. And it hinted that a sensation was coming. What the sensational developments might be the paper had not indicated; for it did not know. But the public had been reminded that autopsies were performed only when the police were suspicious as to the cause of death. Much was made of the fact that Rogan had ordered the autopsy himself. From then on the chief's name became very prominent in the news columns. It had been a strenuous morning. First the station had been swamped by reporters. The news of the autopsy had sent them thronging into Rogan's office. Many of their questions he had been unable to an- swer—mostly because he did not know the answers himself. Why had he ordered an autopsy ? Was there any suspicion that Langdon's death had not been due to natural causes? It was his answer to the last ques- tion that had provoked the ironical, perplexed edi- torial in the afternoon paper. A more diplomatic police chief might have been able to answer this question satisfactorily. But even Rogan's best friends had never looked upon him as a diplomat. Honest, hard-working, efficient he might be; but his direct soul led him to tell the truth always as he saw it. He had informed the reporters that so POISON UNKNOWN far as he knew there was not the slightest evidence Langdon had not died a natural death. He had or- dered an autopsy, he told them, because he felt un- easy. "Rogan Is Uneasy"—these words had headed the leading editorial in the afternoon paper. It was a sarcastic, ironical editorial, the very mem- ory of which made the chief flush. Repeating the expression "Rogan is uneasy" again and again the writer had reminded the city that the doctor had been dining with people whose wealth and social standing were of the highest. Rogan's remark that there was not the slightest suspicion of foul play was given an important place. The editorial ended with the suggestion that the chief of police must have lost his common sense. Rogan had turned very red when he slowly read this comment on his actions. He thought of the previ- ous day, of the dinner in his honor, the long dreary speeches. Then they had given him flowers. But that was yesterday, and this was another day. He had discovered another item in the paper that made him scowl. The medical association had met at noon. Long resolutions had been passed; resolu- tions that spoke of the high professional standing of their dead colleague. But there had been a second resolution introduced—which passed, the paper stated, "without a dissenting voice." It was one con- demning the chief of police for mutilating the body of their former member in order, as they put it, to gratify a whim of his own. This resolution stung. Rogan knew almost every 76 POISON UNKNOWN doctor in the city; liked most of them. That after long years of service they should believe he had had no reason for his action hurt. And it was at this point that doubt began to creep into Rogan's thoughts. The visit of the police commissioner had nothing to do with his state of mind. True, his superior had suggested that he might have been unwise; but Rogan knew he would back him to the limit. One thing the political leaders of the city saw to: the head of the police force was given a free hand. No one interfered, and he had often boasted that this could be said of few police departments. But the resolution of the medical association let him see his action from the viewpoint of the public. He had ordered an autopsy. Deep down in his heart he knew there was not the slightest reason for one. That is, there was none unless he could trust his hunch of the previous evening. It had been a vague warning; a suggestion that things were not as they seemed. Now, as the clear soft light of early after- noon crept into his office, he began to wonder if he had not been foolish. Reaching down to a drawer, he jerked it open to find a box of stogies. When the smoke was lighted he sat for a while, staring moodily at the desk. Pa- pers covered the surface, reports, letters, thrown in a wild confusion. But he felt more at home than when he had first sat in his chair. He had never liked a clean desk. His finger went banging down on a button. He sank back in his chair, throwing a regret- ful glance at the newspapers. He was thinking to POISON UNKNOWN 77 himself that they were not through with him. He had forbidden the reporters entry to his office; but he knew they were down in the basement of the building. They would have more to say about him before, the day was over. It was his police inspector, Kent, who opened the door and came in. The look he give his superior took in the newspapers on the desk and the troubled look on the other's face. And it was Kent's idea that Rogan deserved to look troubled. Though his loy- alty to the chief would never have allowed him to admit it to a single soul, Kent felt that the editorial in the afternoon paper took the correct attitude. Rogan had gone too far; because of "an uneasy feel- ing" he had rushed into a situation in which he had not a fact to stand on. Seating himself, Kent waited for the question that he knew would come. It was delivered in a voice that was both impatient and irritable: "Did you check up on Langdon?" Rogan was told that though the Homicide Squad had followed his instructions they had discovered nothing about the physician that was unknown to the public. Langdon had been unmarried, a doctor whose practice filled almost all of his waking hours. Books and music were his hobbies: and he had little to do with the social life of the city. Rogan received this information without a change of expression—he had known it all for some years. "There was only one thing that looked a bit funny," was Kent's slow observation. POISON UNKNOWN mahogany surface. In no other way could it have be- come so untidy in a few hours. But it was upon the tossed-aside newspapers that his look lingered; he knew that by tomorrow they would be pursuing the police as a hound pursues a frightened hare. "Chief," he began in an apologetic voice, "don't you think you pulled a bad one in insisting on that autopsy? After all, there was no real reason for it. And you can't pull off the usual police methods on people of the social standing of Fletcher and his crowd." There was no reply for a moment. Rogan liked the tall, lanky man who sat opposite him. Some day Kent might succeed him; he hoped he would. He realized that his inspector did not approve of what he had done. For that matter, he was not very cer- tain that he approved of it himself. But he made no reply to what had been said; instead, he asked a question: "Now about that young man who sneaked out of Fletcher's window. Got any dope on him?" "Hardy? Oh, he plays round with Fletcher's crowd. Rather an excitable young man. Some money. Took women's parts in several of the Little Theater shows last winter." "Oh, one of those things!" "Well, anyway he is an excitable fellow. Can't stand much liquor—the type that always talks the loudest and makes a scene at a party: shy on brains, like all the crowd he travels round with." Rogan took some little time before replying. The stogie was out, and needed relighting; the operation 8o POISON UNKNOWN was very deliberate. When it was going to suit him, he slowly shifted his position in the chair. "Odd he sneaked off as he did last night," was the only com- ment. "We found his car," Kent volunteered. "You did!" "Yes. Got a call this morning that a deserted ma- chine was in a ditch down the Lake Road. We found it two miles beyond Fletcher's. License plates show it was Hardy's car. Looks as if it skidded and went off the road." Rogan digested this information for a moment. All morning, at frequent intervals, one fact had kept running through his mind: rack his brain as he might he could see no reason for Hardy's disappearance from Fletcher's house. Excitable and emotional, Kent had called him: no doubt the young man had been afraid of the police. But what Rogan wanted to know was why the thought of the police should have frightened him. He was just about to express this when there came a knock at his door. "Manners, I think," he commented. "Called him up and asked him to come down. Just about time—" His voice died away as he observed that it was not Manners who was entering his office, but Fletcher— a dapper-looking figure, dressed in a tight-fitting double-breasted blue suit, and with a necktie that was wonderful to behold. The little mustache was carefully waxed, but the sallow cheeks were flushed with excitement. As he came hurrying to their side Rogan observed that the small eyes were twitching. "What do you think has happened, Chief?" began POISON UNKNOWN 81 the high-pitched, nervous voice. "What do you think I got this noon?" Rogan gave him a disapproving look. He was surprised to see him; and it was evident the man was highly excited. As he stood at the desk, the hand that rested on its surface was trembling. What was more, the chief thought he knew the answer to the excited question—but he was going to give no sign. So he simply growled out, "What?" For a second Fletcher's nervous fingers fumbled in the inside pocket of the blue coat. They found what they were seeking, and came forth with a folded piece of paper—a piece of paper that he waved before the chief's face. "Another letter. Came in the noon mail to the office. And I am beginning to get a bit fright- ened myself. Only—" "Give it to me," was Rogan's command, as he shut off the threatened flow of words. For a moment before he unfolded the paper the chief soberly studied it. Rather soiled it appeared, crumpled a bit, and that was all. Opening it, he saw the one typewritten line: a line in the exact center of the sheet. Typed on a machine that needed cleaning were the words. "Made a mistake. Get you yet." Without comment he slowly read the uneven line of writing. It was a similar letter that had led to his uneasiness over Langdon's death. And behind the few words of this one there was not only a threat but a hint: a hint that caused every suspicion he had felt 82 POISON UNKNOWN on the previous night to leap again into being. But when he turned to the excited man, who was eagerly watching his face, he gave no sign of what he was thinking. "Any idea what this means?" There came a flood of words, which Rogan shut off as soon as he could. Fletcher, however, was deter- mined to talk: eager to insist that he had no idea what the letter could mean: wanted to ask the chief a series of questions—questions that Rogan could not answer and that he felt no desire to hear. It took several waves of his hand to stem the torrent of words. When they ceased he spoke again. "What in hell have you been doing, Fletcher?" Another flow of words. Vehemently Fletcher in- sisted that there was no reason why anyone should write him an anonymous letter. His hands gesticu- lated wildly, his voice shook. When he stopped, mainly because he was out of breath, Rogan spoke. His voice was cold and even. "Mixed up with any women, Fletcher?" The thin face flushed, as a half-smirk passed over it. He threw out his hands in a sweeping gesture. "Well," began his apologetic voice, "you know how women are. But I am not mixed up very seriously with anyone." Steadily Rogan studied the slim figure standing beside his desk. Fletcher was excited, yet there was a determined certainty behind his wild outburst. Rogan did not like the man. Fletcher's type had never ap- pealed to him. But there seemed to be no doubt that he was speaking the truth. Rogan changed the subject: POISON UNKNOWN 83 "When did you get this letter?" "I found it this noon. When I went to my office it was on the desk. But I can't understand what the word 'mistake' means—?" Rogan made no reply. There was wonder in his own mind. Could it be that the writer of the note was hinting that Langdon's death had been a mistake? If so, perhaps he had been right in his suspicion of the night before. But he did not spend any time think- ing of this. Instead, in a few words, he told Fletcher he would look into the matter, and was pleased to see the man turn and leave the room. As the door shut, Rogan let slip a half-oath. Picking up the letter he carefully examined it. There was a curious expression upon his round face. He held the letter far away from him as if it were an object that might soil his fingers. Paper, typing, creases: in all these points it resembled the letter he had seen yesterday. But what the one-line message might mean he could not tell. He thrust it across the table; and the gesture was violent. "I would like to know what this thing really means. Fletcher's been up to something. Sure of that. But that expression 'Made a mistake' . . . What do you think it means, Kent?" The inspector reached down to pick up the soiled sheet of paper. His eyes searched the typewritten line. His face was expressionless. When he spoke it was evident that he was carefully picking his words. "If Langdon had been—" he hesitated as though not wishing to utter the word in his mind. "If he was—murdered, then this note saying that 'a mis- 84 POISON UNKNOWN take' had been made must mean that they had been after Fletcher and got the wrong man—" Rogan's hand slammed down on the desk. So vio- lent was the gesture that letters went flying to the floor. His voice was rough and eager as he spoke: "Yes. If it had been a violent death, that's what it would mean. Wish I had some idea why Fletcher's getting this sort of letter. But there are a good many things I would like to know. For instance, if I knew—" The words died on his lips as he saw the door opening. This time it was Manners; Manners dressed in a light gray suit, wearing a gay tie, very much at ease and smiling a welcome at his friend behind the desk. He noticed that the chief was excited, and that the emotion was partly shared by the head of the Homi- cide Squad. But without a word to either, the pro- fessor walked over to the desk. It was shortly after lunch when he had received the 'phone call from Rogan. It had been a disturbed voice that had spoken over the wire, requesting that Manners come to the station early in the afternoon. The morning paper had told him that nothing new had happened during the night. On the way to the station he stopped and bought the early afternoon edition. For five minutes he had parked along the curb, while he ran through the paper. The caustic editorial showed very clearly that things were the same as when he had left Fletcher's house. Before he reached the center of the room Rogan's hand had motioned to a chair standing against the wall. Manners brought it close to Kent's side; then, POISON UNKNOWN 85 as he sat down, he reached for his cigarette case. Rogan was still upset—that was clear. As the new- comer's glance dropped to the desk, he noticed the open letter lying directly in front of the chief. For a second he glanced at it; then his eyes shot an eager question. "Another letter!" growled out Rogan as he picked it up and threw it across the desk. Without speaking, Manners rose, picked up the sheet of paper and sank back in his chair before open- ing it. Slowly he studied the soiled note: same ma- chine on which the other letter had been written— no mistake about that, for the same letters were unevenly aligned; same dirty type; same. kind of paper. The short message, however, seemed inex- plicable. He looked over at Rogan. The white head was slowly shaken. "Fletcher just brought it in. Looks queer. Be a damned sight queerer if we knew just what happened to Langdon." Manners started to ask a question, but the tele- phone on Rogan's desk stopped him. With a shrill insistence it rang through the room. The chief reached down for the receiver, growled into the in- strument. The conversation was short, and when the receiver was slammed back on the hook Rogan's face was serious: "That was Bell. He's coming right over." No one seemed to feel like speaking. Manners could see that Rogan was nervous. The fingers of his big hands kept fumbling at the end of his vest; and he lighted another stogie. As for himself, Manners was wondering why it was he did not like this room 86 POISON UNKNOWN so well as the old office. The old office had been a dingy place, dark, dirty, filled with a vile, heavy at- mosphere. This one was large, with plenty of win- dows; and the paint was still fresh. Yet somehow the old room appealed to him more than did this. As- sociation, he thought . . . memories of the past, which this room did not have. Suddenly into the room there crept a sound. Some- where out in the street a band was playing. Manners gave a start as the chords of music came drifting into the room; it had been years since he had heard a street band in the city. Yet to his ears came floating, now, the lilting strains of the "Blue Danube" waltz. His thoughts leaped over space and time, remem- bering the previous summer when in every casino in Switzerland he had heard that waltz. And as he was thinking this the door was suddenly flung open. All turned to look at the police doctor. His hair was in disorder; and his face would have looked bet- ter for a shave. The young man's eyes were blood- shot, as though he had not slept for many hours; a half-smoked cigarette was stuck in one corner of his lips. His white face was set in a tense, fixed expres- sion; and he looked at none of the three men as he came in. His walk was that of a man who needed sleep, weary to the point of exhaustion. Coming to the desk he walked to its furthest end, then leaned against it in a tired way. The cigarette was tossed into an ash tray, as he reached into a pocket for an- other. This was lighted with the unconscious manner of a man who does not know what he is doing. It 88 POISON UNKNOWN . swept out in a helpless gesture, one that was eloquent of despair and regret. His voice came again, slow, hesitant: "Poisoned and I doubt whether we shall ever know the poison that was used !" CHAPTER VI A curious silence had fallen over the room. Rogan's cold gray eyes eagerly searched the face of his police doctor. For almost twenty-four hours he had felt a hint of impending disaster. He had tried to cast it aside by assuring himself that it was only superstition. He knew, now, it had been anticipa- tion. His harsh whisper broke the stillness: "Murder, Bell?" The doctor's slight figure moved uneasily in his chair. The motion was one of weariness, though the long look he cast at his superior was filled also with perplexity: "That's for you to find out, Chief. All I can say is that Langdon was poisoned. It looks like murder to me." One question was in Manners' mind. Bell had said Langdon died from poison. This in itself was a startling statement. But what had followed was even more so: the doctor doubted whether they would ever be able to identify the poison used. Manners knew his toxicology; and he could not recall any poison that would fail to show up in an autopsy by a trained man. And Bell was a good man. Now he put all his questions into speech. Slowly the doctor's hand fumbled in the pocket of his coat. The cigarette was half-smoked before he replied, with a shrug of his shoulders: 89 POISON UNKNOWN "I know it seems a crazy thing to say, Manners; but it's true. There is no doubt Langdon was poisoned. Suppose you just run off for us the symp- toms of strychnine." Manners realized that Bell's request for informa- tion was in reality made for the benefit of Rogan and Kent. He began to review what he knew of strych- nine. He reminded them it is a vegetable poison, and that death results from its use within a period ranging from a few moments up to three or four hours. It is not difficult to detect; for before death there are violent convulsions, with at times the body so arched that only the heels and the head touch the ground. The last bit of information was too much for Rogan. Profanely he reminded them that they had been told that the doctor gave a little cry and a mo- ment later slumped down on the table; there had been no convulsions at all. At least, he assured them, no one had mentioned them. "That's just what I wanted you to say," retorted Bell. "Because, Rogan, our autopsy gave many of the characteristic post-mortem symptoms of death from strychnine. The joints were fixed; the body had extreme rigidity; the feet were arched, and all that sort of thing. Only it happens we found no trace of strychnine. There were some of the symptoms, but not all. And there were certainly none of the reac- tion symptoms before death. So that poison is out." For a second Rogan glared at his doctor, as if wondering why he had gone to the trouble to ex- plain that death was not from strychnine. He began POISON UNKNOWN to put his perplexity into words, only to have Bell stop him with a wave of the hand. "You see, Rogan, there is another vegetable poison—aconitine. Odd thing is, we also found in the autopsy post-mortem symptoms of that—but not the poison itself. Found congestion of lungs and brain, blood abnormally fluid and red. Now aco- nitine is very difficult to detect in any case; and yet we are certain it was not that." The look Bell received would have made Man- ners laugh if the topic had not been so serious. Rogan's face was a puzzled mixture of disgust and doubt. There came his astonished growl: "What in the devil are you trying to tell me ? Why all this talk about those two poisons if you know they were not used?" "That's just the trouble," was the retort. "We find post-mortem symptoms of both—that is, some symptoms of each one, though not complete. Aco- nitine is very difficult to detect. But before death the person who has taken it becomes very pale, and is deathly sick. And though one might die from it in a very short time, yet it has been known to take from one day to four for death to occur. What I am get- ting at is this: though we might conclude that one of these two poisons had been used, the post-mortem leaves us up in the air. In fact, we think it was a new poison, one whose symptoms are similar, in many respects, to those of strychnine and aconitine combined." "What poison?" Rogan demanded. "We don't know. That's the whole truth of the POISON UNKNOWN affair. That there can be a deadly poison not in the latest Webster, or other standard works on toxi- cology, seems absurd. But that's what we seem to be up against. Some of the symptoms are like those of strychnine; but it was not strychnine. Some are like those of aconitine; but it's not that. We don't know what it is." Silence fell again, as they thought over the doc- tor's information. The most startled of the three men was Manners. A new poison, unknown to the writers of the standard works on poison—that might seem reasonable in a mystery story, but not in a real case. Bell was one of the shrewdest young physicians he had ever known; there was little chance of his making a mistake. That the autopsy had shown that Langdon had been poisoned—and yet that the poison remained unidentified—seemed incredible. It was Rogan who put his thought into words: "How was it given to him?" "I am positive of one thing, Chief," was the re- sponse. "He did not take it internally. That was an impossibility." "Why?" "He died too quickly. Aconitine generally takes several hours to produce death—that is, if taken internally; so does strychnine. As I said, though we discovered symptoms characteristic of both poisons, yet his actions at the table show that neither could have been used. Aconitine produces a burning and numbness of the throat, which the doctor would have detected and by his actions betrayed. The typi- POISON UNKNOWN cal convulsions that strychnine produces were ab- sent. But the poison, whatever it was, must have been introduced directly into the blood stream." Rogan stifled back a sigh. The conversation was getting technical. Bell had said that the man had died from poison; yet it was a poison he did not know. Now he was asserting that the poison had not been swallowed, but had been introduced directly into the blood stream. Why was he so certain of this? As though reading his mind, the doctor spoke: "You see, Rogan, what makes it very odd is this: aconitine, when swallowed, will kill one—but it takes a matter of hours or even days. Yet if ad- ministered hypodermically it will kill in a few mo- ments, or even seconds. So with strychnine. As we know Langdon died very suddenly, just after giving a slight cry, we are positive he could not have swal- lowed the poison. He must have received it directly into his blood stream. But how? That's the big problem." It was getting worse, the chief thought. There was now little relief in his mind at the fact that his demand for an autopsy had been justified. A mur- der had been committed. They did not know the poison used, or how it had been given. An uneasy suspicion swept his mind. If the criminal was shrewd enough to employ an unknown poison, they might never know more about the crime than they did now. As he thought this, his glance dropped to the table and rested on the letter Fletcher had brought in only a few moments before. For a second he stared at it—then his hand shot POISON UNKNOWN 95 "It's murder," was Rogan's comment, as the door closed. "It's very evident it's murder," Manners re- torted. "And do you realize that if the murderer knew of a poison so rare that the latest books on toxicology do not mention it, you are going to have some work ahead of you before you solve this case?" "Fletcher's letters are the end to look up," Rogan shot out. "The one he got today says they made a mistake: killed the doctor thinking it was Fletcher." For the first time in many minutes, Kent spoke: "How could anyone make that mistake?" "Remember—last night they told us that Fletcher got up from the table and turned on the radio, and that Langdon took his place—so that he was sitting where Fletcher had sat all evening." "That doesn't make any sense, Rogan," sniffed the inspector. "Everybody in that room knew Lang- don. It made no difference where he sat. You're not trying to tell us that someone outside the house killed him! I had a man outside that dining-room window, and he says no one was in the yard all night. For that matter, you have no idea how the poison was given. I can't see any sense in getting excited over the note to Fletcher. It's my idea it refers to something else, not to this murder." Rogan made no reply. What Kent had said seemed sensible. The letter, nevertheless, appeared to be the one clue he had. But he would have to go very slowly. He would need all the advice he could get. As he thought this, he looked over at his friend. Th« sight of Manners' calm, thoughtful face gave 96 POISON UNKNOWN him assurance. It was no time to be indulging in theories: the case was just starting. What they would discover later on no one could guess. He rose to his feet. "Kent, I am going out to Fletcher's right away. Harley will take me in his car. You dig up Rice and bring him out so we can go over the ground with him. Fletcher's is the place where we must start our investigation." The only reporter who happened to see Harley Manners and Rogan hurrying out of the police- station was Carty Rand. It was no accident that he observed them. Four o'clock had just struck; and the last edition of the Star was running off the presses. Both papers were under the same ownership; and Rand was connected with the morning edition. He had strolled into the police-station shortly before four, just in time to see the chief and the professor hastening down the corridor. He was a shrewd young reporter, rather a fa- vorite with Rogan. As the two men went through the front door he turned and hurried after them. Something was up: Manners would not be at the police-station unless Rogan had called him in. The two men were in a hurry. They must have heard from the autopsy. Hastening through the door he ran down the three steps, reaching their side as they were about to climb into Manners' long blue roadster. The scowl he received from the chief did not bother him; and he grinned back. "What's up, Chief?" he de- manded. POISON UNKNOWN Rogan liked the thin, eager newspaper man. Only a year ago he had been one of the principals in the oddest murder that had ever occurred in the chief's long career.* But it was an unfortunate time to have Rand asking him questions; he made a sudden de- cision. "Listen, Carty. We just got the report from the autopsy. Langdon was poisoned." Though the reporter had known Dr. Langdon, and respected him as he did few men, yet a grin swept over his face. It was blotted out in a second, as, leaning against the car, he listened to the plead- ing words of the chief. "He was poisoned, Carty. But that's all we know. We don't know the poison used, or how it was given. In fact we don't know anything. Bell is at work with Hoff now. I want you to see the editor and tell him to keep it out of the afternoon papers. We will give you every fact we have in time for the morning edition. To publish anything at this moment might do a great deal of harm. No one knows anything about the autopsy except the police. How about it?" The reporter nodded. The library murder of a year ago had shaken the city; and he realized that this story would create an even bigger sensation. A great newspaper story was about to break—one in which he would have a chance to play a leading part. He assured Rogan there would be no difficulty in keeping the story out of the evening paper. The last edition by now would be on the street. He would call * Murder in a Library. Dodd, Mead & Co. 1931. 98 POISON UNKNOWN the editor; better still, he would return to the of- fice and impress upon him that nothing must leak out till morning. This would forestall the issue of an extra. Only one thing did he insist upon: that the chief give him every detail for the story he would write later. Assured that he might depend on Rogan, he turned away from the car and started on his way. Both Rogan and Manners were silent as the road- ster covered the miles. The July sun was warm, the air still. When the suburbs were reached it became possible to let the machine out. There were plenty of cars, for the Lake road carried the heaviest traf- fic in the state; but Manners was a skillful driver, weaving the big machine in and out among the slower cars, as he kept the speedometer close to sixty. Rogan, he knew, was impatient; for that mat- ter, he was always so. Slumped far down in the seat, his face expression- less, Rogan stared ahead at the rushing road. He saw neither the cars they swept by nor the large estates on each side of the highway. He was think- ing. The nervous uneasiness of the last twenty-four hours had passed away. Now that he knew that Langdon's sudden death had not been natural, he had become calm. Murder—that was what it was, without a doubt; a murder that would prove very difficult to unravel, that perhaps they might never solve. Only his confidence in the calm man sitting be- side him gave any hope. Poison . . . and an unknown poison at that. A crime committed at a dinner—yet it seemed rather evident he could not suspect any of the guests. Death POISON UNKNOWN must have come within several moments after the poison entered the Lody. He tried to evolve some theory that might offer a hint as to how the poison had been administered; but gave it up after some re- flection. After all, until Bell told him how the drug had entered the doctor's body, a guess was of no value. To a certain extent his thoughts were running parallel with those of Manners: the professor real- ized far more than did the chief that it was no ordi- nary murder they were going to investigate. Poison was not the weapon used in most cases of violent death. It was a weapon employed only after long deliberation and shrewd planning. Somehow Man- ners had the idea that Langdon's death followed someone's cunning choice of the place and the time for him to die. Rogan credited the letter, which said it was a mistake; Manners felt certain that no mis- take had been made. It was a carefully planned crime: beyond that he was not willing to go. At last they turned off the main highway and ran down the road that led to Fletcher's estate. Tall elms flanked the road, their leafy branches making a green arch overhead. Through open gates green lawns flashed by, and gardens filled with color. When they reached the Fletcher place, they left the car in front of the house. Manners followed Rogan around the side of the wide veranda, to stand op- posite the dining-room window. Directly below the window was a cleared piece of ground filled with soft earth. It was only about three feet wide, and not more than twenty long. Evidently it had been POISON UNKNOWN 101 out flower or plant. In the center were two well- defined footprints—good-sized footprints, those of a man who had worn rather large shoes. They were directly in line with the center window. Before he could comment, Rogan's voice came again in his ear: "Someone was here, Harley. We don't know whether these were made last night, but the odds are they were. They are rather clear, right under the window at that, and directly in line with the chair Langdon sat in." "They may be Rice's," was the retort. "After all, he was right in this spot last night." "They are not Rice's. Hell, none of the men on the Homicide Squad who do leg work ever wear any- thing but squared-toed shoes. Look at those prints; the toes of those shoes are pointed. What's more, they are too large for Rice. He never made those." Manners looked again at the footprints. They could not be those of the detectives who had guarded the grounds the previous night: what Rogan had said about the square-toed shoes worn by the police force was conclusive. But the profes- sor was interested in something else. "Rogan," he said slowly, "there seems no doubt that Rice didn't make those prints. Yet that some- one was standing out here last night seems highly probable. Exactly what's on your mind? What do you really think happened to Langdon?" The chief's eyes swept over to the open windows, then down to the earth. There came a half-shake of the white head, and Manners saw the big hands shut. POISON UNKNOWN Then suddenly Rogan's hand fell upon his arm, pull- ing him through the shrubbery. He kept his hand upon him, as they walked over the grass, out under the tall trees, and some distance from the house. Then the chief spoke: "I will have casts made of those prints, Harley. But—" he paused, to turn and glance back at the house, "Harley, I am starting out with the idea that those letters Fletcher got had something to do with the murder: for of course it's murder; Langdon could not have killed himself." "Oh, he could have committed suicide, Rogan. That might be a far more feasible theory than that he was killed by anyone at the dinner. That is, it might be if I had not known the doctor. His psycho- logical type never commits suicide. So that theory's out. But why are you so insistent those letters have something to do with the affair?" "Well, you can't think that any of that gang who were at the dinner would kill a friend of theirs. Be- sides, they wouldn't have nerve enough. And Fletcher did receive those letters. The one we saw yesterday said he was in for trouble: the one today says a mistake was made. It's my idea Langdon was killed by mistake, by someone who thought he was Fletcher." "From outside the house!" came the skeptical question. Rogan slowly shook his head. "Seems silly. Can't see how it was done. But if we eliminate everybody inside, it's got to be someone outside. Agree with me r POISON UNKNOWN "If it was not someone inside the house, as you put it, then very naturally it must have been some person outside the window. But, Rogan, there are at least a dozen ways the poison could have been ad- ministered by a person sitting at that table." A violent exclamation sprang to Rogan's lips and he would have spoken, had they not at that moment heard a car coming up the drive. It circled around Manners' machine and stopped before the veranda. Out of the small roadster there stepped a woman. Both recognized her: they watched Ann Fletcher hasten up the steps of her house. With the words "We must see her," Rogan started at once across the grass, Manners close at his heels. They found the front door closed, and were forced to ring the bell twice. Then the door was flung open and the mistress of the house looked out at them. Her face flushed a little as she saw the chief; and she did not look at Manners. "I am sorry, Mrs. Fletcher," began Rogan. "But I had to see you." For a second her grave eyes studied the police chief. Again Manners felt surprise. The slight figure was beautifully shaped, and the black street dress could have been chosen only by an artist in clothes. But it was her face that interested him: breeding showed there, also intelligence and fineness of char- acter. As he was thinking this, she turned to him. "I am sorry, Professor Manners, that your two visits to my house have been with the police. That we had not met before last night shows how rarely you go into society." POISON UNKNOWN As she stepped aside for them to enter the house Manners noticed that the sensitive lips were trem- bling. What was more, he had looked deep into her eyes—and they were dark and piercing eyes, which were now full of fear, and very anxious. As they were shown into the library in which they had sat the night before, he felt certain of one thing. De- spite her outward calm this woman was afraid. She did not speak when they entered the room. Instead, walking slowly over to the table she opened a silver box, found a Turkish cigarette and lighted it. Then, leaning against the table, she turned to the police chief: "Well?" she said in her low, husky voice. Rogan was embarrassed. Women always did em- barrass him. He had decided this woman was a lady; there was no higher compliment he could pay her. But—lady or not—he wanted information. Clearing his throat, he spoke: "I am sorry, Mrs. Fletcher, but I have to ask some questions. You see we have just discovered that Dr. Langdon was—w Manners noticed a sudden, frightened expression sweep across her face, saw the cigarette suddenly crushed in an ash tray. Then she spoke, the voice low, trembling, hesitant: "Dr. Langdon, you said, was—" "He was poisoned—murdered," shot out the un- thinking retort. Manners saw Ann Fletcher's hands grip the table for support. The long lashes closed over the gray eyes. Her face went white, and for a second she POISON UNKNOWN 105 swayed a little. As she fell forward, he caught her in his arms. As they went clasping round the soft body two thoughts were in his mind: What does this woman know ? Of what is she afraid? POISON UNKNOWN fore him. That she knew anything about the doctor's death he did not believe. Nor did he expect that any information she might be able to give him would be of value. There was a question in his mind: how much should he tell her at this time? He decided it would be little. "How did it happen that Dr. Langdon was sitting at the end of the table, Mrs. Fletcher? Did he sit there all evening?" She shook her head, "No. Somebody said some- thing about picking up a fight on the radio. Mr. Fletcher went into the living-room to tune in. It was then the doctor took my husband's place; it was just an accident that he happened to be sitting there." Accident—thought Rogan. Better not tell her it was his idea that the wrong man had been killed. It might be she suspected as much. One never knew what any woman was thinking. This one appeared calm enough, looked him directly in the eyes, and all that sort of thing. Still—you couldn't tell what was in that small head. Beautiful woman she was. He wondered how she ever happened to marry a man like her husband. Wish one might ask her that, thought Rogan; but if you did you would get noth- ing for your pains. "Mrs. Fletcher," said Manners quietly, "we were told last night that Dr. Langdon gave a sudden little cry: that a moment or so later he slumped down on the table." "Yes. That's what happened," she answered slowly. "The radio was going in the other room; and, I must admit, everybody was talking rather io8 POISON UNKNOWN loudly. Suddenly Dr. Langdon gave a cry—of sur- prise rather than of pain, it seemed. We all looked at him for a second; then everyone started to talk again. But all at once his head fell forward on the table. There was great confusion, and from some- where a policeman suddenly appeared. I was sur- prised to see him." Manners had another question: "You were sit- ting at the opposite end of the table from the doc- tor: when he gave the cry did you observe anything he did—any action on his part?" "No—" came the hesitating reply. "You see, I did not look up until after I heard his voice. I think his arm was above his head, but I am not certain." "Mrs. Fletcher," suggested Rogan, "everybody at your dinner was on good terms with the doctor?" Though her reply came quickly enough, it was Manners' impression that behind the words there was hesitancy. She assured them that so far as she knew every person at her dinner was a friend of the physician. Even when Rogan tried to suggest that per- haps the young man who had vanished from the kitchen—Hardy—might have quarreled with the doctor, she only smiled, a pathetic smile, and replied that so far as she knew the idea was absurd. Rogan might have gone further with his question- ing; but through the window he saw the police-car sweeping down the drive. With the remark that he would see her again in a few minutes, he beckoned Manners and hastened out into the hall and on to the veranda. By the time they were down the steps the machine had come to a stop, and Kent with his POISON UNKNOWN plain-clothes man—Rice—was stepping out on the ground. To Kent's surprise his superior officer gave a gruff command to follow, and started round the side of the house. He came to a pause directly in front of the bay window, pushing the shrubbery aside with his hands. Directing Rice to come to his side, he grabbed the plain-clothes man with one hand, and pointed down at the footprints with the other. "Are those yours?" Rice was the typical policeman: round, red face, thick-set body, and a slow-thinking brain. For a mo- ment he stared at the soft earth under the window. Solemnly his eyes took in the well-defined footprints. Then all at once he broke into protest: "Hell, those ain't mine. I never stepped in that dirt last night. Anyway, you can see they're too big for me. My feet are big enough, but not as large as those footprints. I never made those—and what's more, they're too big for Mike." Satisfied, the chief let the branches fall into place and stepped back on the grass. His eyes went over the long expanse of lawn, and out toward the lake. Far away he could see an ore boat, the smoke from its funnel an etched line of inky blackness against the sky. For a second he studied it, then turned: "Did you hear anything while you were out here last night, Rice?" Very positive was the assurance he received. The detective had heard nothing, had seen nothing. He had spoken twice to Mike, who was guarding the rear of the house. Mike had heard nothing—but he no POISON UNKNOWN had complained that it was a nice dark assignment they had been given. To make his statements more emphatic Rice reminded them that he had spent a good deal of his time behind the shrubbery: the group within the house had interested him, and from this spot he had been able to look directly into the dining-room. He had seen the doctor fall forward on the table, had heard the people within the room scream out as they crowded around the silent figure. No one had walked under the window. He was posi- tive of that. Seeing that Rogan would make Rice show him every foot of the ground he had walked over the previous evening, Manners told him he would drive on home. He realized that the chief would question Mrs. Fletcher further before leaving. Somehow he did not wish to have any part in that examination. He wanted to go to his own house, sit down in his easy chair, and think. On the ride back he purposely kept himself from thinking. True, he drove slowly; and it was some time before the long blue roadster came to a stop in front of his veranda. Leaving it there -he stepped out, patted the head of the big dog who ran down the steps to meet him, then hurried into the house. There he got out the Scotch and the soda, with a glass, and put them on the desk. Sinking down in the deep arm-chair, he let his hand fall on the brown head of the dog, as he realized he was tired—tired and lonely. A restful room, this, whose quiet and peace always brought him comfort. But he knew there ought to be someone in the chair across from POISON UNKNOWN in him—someone to whom he could talk, whose very presence would make the room happy as well as peaceful. But he realized that this kind of thinking was not sane; for the only person he would have wished to be in that room could not be there. He poured three fingers of Scotch into the tall glass, then watched the soda change the color of the con- tents to pale yellow. Leaning far back in the chair, he sipped his drink—and began to think about the crime. One of the oldest maxims of the law ran through his mind: "Quis, quid, ubi, quibus auxiliis, cur, quomodo, quandof": "Who, what, where, with what, why, how, when?" When all those questions could be answered you had the solution of any crime. But oftentimes you were unable to answer more than one—could go no further than that one. "Quibus auxiliis: With what?" Poison. This they could answer. Murder by poison was of course not a new method of killing. As a rule it was a weapon employed by superior or at least fairly well-educated persons: by people who could plan and elaborate a crime but who were not able to bear the sight of death, or to be present when the victim passed from life. As a rule this class of murderers were over- confident; and always they made mistakes. He thought of the many doctors who had used poison: Palmer, Buchanan, Crippen, Harris, Lamson. All had been detected. But there was another fact to consider about poison: it was a woman's method. Two-thirds of all the solved poisoning cases ended with the discovery ii2 POISON UNKNOWN that a woman was the criminal. It had been so in the Middle Ages, and the same had proven true in the eighteenth century in France. Poison was a woman's weapon. There was still another thing to be considered. When poison was employed in a murder, you could, as a rule, be certain of one fact: the crime had been well thought-out; it had been deliberate. To commit a murder with poison meant that the criminal must do much planning before he could be successful. And it was at this point that Manners began to disagree with Rogan. The chief was firmly convinced that the anony- mous letters Fletcher had received had something to do with the murder. As a teacher of abnormal psy- chology, Manners realized what Rogan did not: that people who write anonymous letters do not commit murder. They make unsigned attacks be- cause they lack the courage to face openly those whom they dislike. Manners did not forget that there were exceptions to this rule; but he knew the exceptions to be few. Rogan's investigation would take one line: that Langdon had been killed by mistake; that when he rose and changed his seat at the table he had met his death because the murderer mistook him for Fletcher. But this could mean that the murderer saw only the back of his victim—an idea that seemed ab- surd; for it would place the criminal outside the house. And Rice was positive that no one had been under that window, or on the lawn. This presented a problem the professor could not POISON UNKNOWN 113 solve—and he gave it up after a while. He was sure no uneducated person had planned and committed this murder, however. Also, he had the uneasy idea that no mistake had been made. It was his belief that from the first Langdon had been the intended victim. Why he thought this he could not have said—but it was his conviction. "Quibus auxiliis?" He smiled, as he thought how Rogan would ask what the old Latin phrase meant. "With what?" Poison unknown. That was all they were sure of: an unknown poison; one that was not in the latest books of toxicology. This suggested that, whoever had been the intended victim, the murderer was someone with a keen mind, shrewd enough to pick a poison that could not be detected, one that would act quickly. If the leading authorities upon poison did not know of the drug, where had the criminal procured it? His hand reached up to pour a small quantity of Scotch into the glass. When the soda was added he gave a little twist of his wrist and watched the yel- low liquid swirl in the glass. An unknown poison— so rare that experts knew nothing of it. And this proved that the crime had been planned with great shrewdness, skillfully executed. But for what rea- son? He thought of the dead physician. A child special- ist, known throughout the state, an admirable citi- zen, a man of fine character and mind, Langdon was beloved by thousands. Books, music, etchings were parts of his daily life; and the leisure hours which his professional duties left him he spent in his POISON UNKNOWN 115 dinner would soon be served. It was not yet twi- light, but before leaving at noon he had suggested an early meal. Looking at his watch he saw he still had a few moments for meditation. He lighted an- other cigarette-and began to think of Ann Flet- cher. ... Had Manners been asked to describe the qualities a woman should have, he would have named some very like those that Fletcher's wife possessed. There must be proudness of bearing, intellect, of course, beauty if possible, with breeding, refinement and un- approachableness. He liked the way Ann Fletcher carried her head, proudly, with a realization of her own worth. Yet he remembered that when Rogan woman had been afraid. Fear had played in the dark eyes, fear that she had attempted to hide. But why should she have been afraid? Could it be the letters her husband had received ? Perhaps this was the explanation. As he thought over the point, there came to his mind an- other mystery: why had a woman of her type mar- ried a man like Fletcher? As the housekeeper's voice sounded from the dining-room he rose slowly to his feet. . . . She must have married him because she loved him. ... How she could have done so he could not understand. It is to be doubted if he ever knew how fine a dinner he had that evening. The dog, sitting upright beside his chair, tried several times to gain his atten- tion, but failed. Just before the dessert was brought in, the animal was startled to see his master sud- e dinino oved b. She n6 POISON UNKNOWN denly push back his chair and leap to his feet. With an exclamation, Manners half-ran out into the hall- way and hurried up the stairs to his room. He was looking for the coat he had worn the night before. He found it in the closet, and his face was anxious as he searched the inside pocket. He found the envelope he was seeking, and a second later he was looking at it—was recalling its contents. The previous evening, by Langdon's chair, he had stepped upon something. Salt, perhaps—but he re- membered that when he reached down and touched it it had seemed far too coarse for either salt or sugar. He had gathered together all the fragments he could find, and this envelope contained them. It was still sealed; and he hastened down to his library before tearing it open. Going over to a cabinet he pulled open a drawer. In a box was his high-powered microscope. It was brought to the desk and taken from its box. Then he reached down and picking up the envelope tore off one end. He poured part of the contents into his hand and studied them. Whatever it might be that he had picked up, it was very evident that it had been crushed beneath someone's feet. Yet as he looked at the white sub- stance lying in his palm he knew it was glass: and there was even one fair-sized piece remaining; a fragment several times the size of the head of a pin. Carefully he placed it upon a slide and slipped it under the lens. Bending down to the eye-piece he adjusted the apparatus until the fragment on the slide sprang into POISON UNKNOWN 117 relief. He was looking at a piece of glass, very much magnified—an extremely thin bit of glass it was. And as he continued to look he noticed a faint green stain upon it. Scarcely perceptible, it yet was there. Rising, he walked several times, quickly, around the room. He had stepped on this glass; it had been directly behind the chair in which Langdon was sit- ting; someone else had stepped on it before, no doubt when those at the table had crowded about the dead body. Thin glass . . . and he had ob- served a green stain. . . . He gave a start, and hur- ried out into the hall. As he dialed a number there was but one question in his mind. Would Hoff still be in his laboratory? He wanted him to have those bits of glass. A suspi- cion was sweeping over Manners. Soon a deep, grave voice came over the wire. It was Hoff; he was still in the laboratory, and would remain there until the professor came down. Returning to his desk he carefully placed the crushed glass in a new envelope, which he sealed. As he started for the door the housekeeper reminded him he had not eaten his dessert. Protesting to her that he would not, he ran out of the house and leaped into his machine. A moment later he was on the road. Down the long, steep hill the car was hurled, its speed increasing every second. The professor was in a hurry—for he realized he might be carrying im- portant evidence. Ann Fletcher had said that after Langdon's sudden cry she had looked up, to see his arm dropping from his head. The poison had n8 POISON UNKNOWN entered his body externally. Could the crushed pieces of glass in the envelope hold the explanation of how it had been given? The University stood on a hill, in the very center of the city. Long granite buildings enclosed the campus on three sides. A new dormitory was being erected, and he had to weave his car past trucks and drays in order to reach the chemistry building. Lead- ing the machine in the first open space, he jumped from it to hurry into the low brick structure. Hoff's laboratory was on the second floor. Man- ners sped down a long corridor where his footsteps echoed from vacant class rooms. A door was slightly ajar; and he entered a long room. Beyond this was the private laboratory of the toxicologist, a place that few were allowed to enter. The door to this was partly open, and he stepped within. There was no order in the professor's laboratory; everything was in confusion. Bottles and retorts were upon the many tables; piles of magazines were flanked by books; and the long sink was filled with bottles and test-tubes. At the farther end of the room, his eyes glued to a microscope, was the slight figure of the man Manners was seeking. Though the entire city-knew the toxicologist few ever stopped to realize that the man was world- famous. Perhaps it was his gruffness of speech, per- haps his personal appearance, that accounted for his neglect by the general public. His intelligent students loved their professor; those less blessed with brains were soon persuaded to leave his classes. At the sound of Manners' footsteps Hoff lifted POISON UNKNOWN 119 his head, gave him one glance, then slid down from the stool. The unkempt hair no doubt had felt his hands a hundred times during the afternoon. As he turned and peered through his thick glasses there was a scowl on the grotesque face. Only for a mo- ment did it last; seeing who it was, he growled out a word of greeting. Pausing beside the table, Manners eyed the micro- scope. There was a question that only Hoff could answer, and he had to ask it: "Have you discovered the poison that killed Langdon?" For a second the little eyes behind the thick glasses studied him. Then came the guttural answer: "Harley, how much time you throw away on all this crime stuff I What an absurdity. Why don't you stick to your psychology?" They were friends, these two. Manners knew this was simply Hoff's way of telling him he had failed to discover anything. He merely commented: "Found nothing?" The bushy head nodded, as the finely shaped hands of the toxicologist fumbled in the pockets of his coat. Climbing back on the stool he lighted the cigarette, exhaled a cloud of smoke, and said: "Know he died from poison, that's all. But, my God, Harley, just think of it I Here is a poison I never heard of. Haven't the slightest idea what it can be. Think of running into a thing like that! I feel pretty good about Bell's calling me in. He is a good man. But in a thing like that . . . why . . ." his arms swept out in a wide circle. Manners knew Hoff to be one of the best toxi- i2o POISON UNKNOWN cologists in the country. And he had just confirmed what the police doctor had told them in the station: that Langdon had been killed by an unknown poison. Hoff was an expert upon poisons—yet he had ad- mitted he did not know what poison had been used. "Think he committed suicide?" questioned Man- ners. "No," was the disgusted reply. "You know he did not. Langdon never would commit suicide. It must be a murder—though you know more about that end than I do. It's the poison that interests me. In action it resembles both strychnine and aconitine; yet it's neither. It is a new poison, something I never ran into before, nor ever heard of." Manners' hand was reaching into his pocket. His fingers closed around the envelope, and he brought it forth. The eyes of the toxicologist followed him with interest—watched the motion as he tore off the end of the envelope—leaned forward eagerly as he began to speak. "Hoff, I do not know just what this means," Manners said slowly. "But in this envelope are some tiny bits of glass. They were found on the floor, be- hind the chair in which Langdon died. I looked at them under the microscope. And there seems to be a green stain—" The sentence was never completed. Hoff's hand shot forth to snatch the envelope from his fingers. Very carefully the contents were poured upon a sheet of white tissue paper. Then the toxicologist reached for the microscope, placed a piece of the glass on a slide, and slipped it into the apparatus. POISON UNKNOWN 121 Climbing upon the stool he glued his eyes to the instrument. Silence came over the laboratory. So long did it last that Manners was impelled to speak: "Hoff, what do you think it means?" The little figure whirled around on the stool, then slid to the floor. One look, and one only, did he give his friend. Then came a violent motion of his hands. The voice that shrilled forth was eager, command- ing. "Harley, for God's sake get out of here. Go down to the police-station and talk to that police captain. Go to the movies, go anywhere. I don't know what it means. May take a long time to find out. But it means something. And for God's sake get out and let me work in peace." CHAPTER VIII Seated once more in his car, Manners smiled up at the building he had just left. Hoff had ordered him out of the laboratory. It was like the excitable toxi- cologist. He knew Hoff would spend all night over his test-tubes and retorts. When engaged in a problem he wanted no one around him. And the bit of glass that he had shaken out of the envelope had greatly excited him. A glance at his watch showed Manners it was half-past seven. Twilight had fallen over the city, and he had half a mind to return to the house and spend the evening reading. On second thought he realized this would not do. A little wave of excite- ment was running through him. He knew he would never be able to spend the evening alone. He de- cided to go down to the police-station. Rogan might have picked up more information. As he parked beside the gray granite building, he sent a glance upward at the chief's office windows. They were dark. So when the professor entered the station he went down a long hallway to halt before the door which bore the words "Police Inspector." A light was shining through the glass; and he knew Kent was in. He did not knock, but pushing open the door walked into the little room. The tall, raw-boned in- spector was sitting at a small desk, under a bright I 122 POISON UNKNOWN 123 light suspended from the ceiling. His coat was ofi; and he was puffing a worn black pipe. Pushed to one corner of the desk were two plates, one bearing rem- nants of sandwiches, the other the crust of a pie. A thermos bottle stood close to a cup that had con- tained coffee. Evidently he had been working upon reports; for a mass of papers was pushed aside as, leaning back in his chair, Kent threw a smile at his visitor. There was only one vacant chair in the room, and Manners pulled it close to the desk. He lighted a cigarette and asked a question in the same breath: "Found anything new?" Kent shook his head slowly. "You know, Man- ners, Rogan is certainly going to have the city jump- ing on him tomorrow. When they hear Langdon was murdered there will be an uproar. And just at this moment the old boy has two theories." "Two?" Kent gave a half-laugh. "Two at the same time. They are as far apart as two theories could be. One moment he has made up his mind that somebody sit- ting at the table killed the doc. The next he is just as certain it was someone outside the house. He would stick to the second theory, but for one thing." "What's that?" "WelL you see he believes Rice. Rice says he was under that window most of the time. He admits there were occasions when he wandered off to have a word with Mike. But he says that for fifteen min- utes before the doctor fell all over the table, he was standing outside that window, looking in. Says no POISON UNKNOWN one could have got anywhere near there without his knowing it. Anyway—" he paused and laughed—"I tell the old man that somebody had to stick that poison into Langdon. They couldn't do it from out- side, so it must have been an inside job. Somebody at the table could give him a jab with something that had the poison on. Remember that other case—that poisoning case where they placed curare upon a needle and put it on the horn button of a car? * Might have done something like that in this one." Manners well remembered the case the police of- ficial mentioned. There had been two deaths, sudden and mysterious, solved in the end by his own quick wit. In that case the fast-acting poison had been placed on a needle, and the needle fitted into a rub- ber cap that covered the horn button of a car. But he assured Kent that nothing like that had happened in this affair. Then he added: "No motive seems to be in sight." "Oh, that young chap, Hardy, who did the vanish- ing act on us, was jealous of the doctor," was Kent's surprising contribution. The remark brought Manners to the edge of his chair; and he wanted to know what was meant. The inspector told him that after he had left, Mrs. Fletcher had admitted having had a little difficulty with Hardy. The young man was jealous of the doc- tor, and had raved a bit when he discovered that Langdon was to be at the dinner. This surprised Manners. "She did not say much," Kent admitted. "Said • The Shadow of Evil. Dodd, Mead & Co. 1930. POISON UNKNOWN 125 the doctor was an old friend of hers, and that young Hardy was a queer sort of youth. He is all that, and a bit more. Anyway he had been at the house all afternoon, and when he heard the doctor was to be at dinner, he grew a bit sarcastic. Jealous, and all that sort of thing." "Did he make any threats against the doctor?" "She never mentioned that he did, though we tried to get it out of her. Simply said he acted like a fool. I came very near telling her that all he had to do was just be himself." Manners made no reply. So there had been dis- cord at the dinner. There was no doubt Mrs. Fletcher had been afraid. Fear had shown in her eyes. She had fainted when Rogan said Langdon had been murdered. Hardy he did not know, but he ac- cepted Kent's description as correct—an effeminate young man, neurotic, self-willed, high-strung—one who might be called a hanger-on to a social group to which he did not belong. But in the act of think- ing this, Manners realized he could never believe a young man of such a type would commit a murder by poisoning. He would lack the brains. Kent became sarcastic: "The chief also believes that the letters Fletcher received have something to do with the affair. He has all those things mixed up. Somehow he believes they all entered into the crime. But we can't get very far until we have some kind of a motive. There always is a reason for a killing." Manners reminded him of the three main motives for murder. There were those crimes which had a sexual background, in which jealousy, or betrayal of 126 POISON UNKNOWN faith, or a woman played a part. There were the mur- ders for gain, to procure or to keep money. There were those of another and larger group: crimes in which one looked for the psychological motives and discovered it to be fear—fear of exposure, fear of a hundred different things: murders committed by people so much afraid that in many cases they killed in a sudden, raging frenzy. But for one thing he would have thought Langdon's death lay in the third group. Kent asked why he had decided fear was not the motive in the heart of Langdon's murderer. Man- ners told the inspector that most murderers whose fears had broken forth in a frenzy killed on the spur of the moment. Langdon's death had been care- fully planned, was without a doubt the result of long deliberation. There came an amazed exclamation: "Langdon's death carefully planned! Why do you say that?" "It was poison. It takes time and thought to pro- cure poison. It takes a plan—as to how it shall be used. The doctor's death was premeditated. Why Langdon was picked to be the victim I cannot, of course, say." Kent made no reply. He had great respect for the tall man seated across from him. Manners knew scores of things which to him were but names. And the professor might be right. As for himself he had no theories. Theories he would leave to Rogan; he had enough. And there was detail work at hand for himself: to discover every fact he could about those who had been at the dinner: to try to capture POISON UNKNOWN 127 Hardy: and to find out why the latter had vanished from Fletcher's house. Excusing himself, Manners rose from his chair. He had seen Kent throwing uneasy glances at the mass of papers upon his desk. He knew the inspector had hours of detail work before him. With a short "good night" he turned and left the room. As he climbed into his car he noticed that Rogan's office was still dark. For a moment he sat motionless, slumped down in the car, behind the wheel. It was a warm night with barely a breath of air to fan his face. A glittering mass of lights, the long line of State Street stretched away before him. Far above his head he heard the steady drone of a motor as a plane went winging its way toward Canada. And then suddenly he knew what he was going to do. Rogan was preoccupied by the anonymous letters. He had once said to Manners that he believed a blackmailing gang was at work in the city. It was only a suspicion; for people who were blackmailed made the mistakes of never bringing their troubles to the police. If the underworld did have a black- mailing group among their number, the professor knew he could find out the truth about them. He was going out to Joe Zuko's. Zuko was presumed to head one of the most no- torious gangs in the country. This was his reputa- tion—it had never been legally proven. Ten miles outside of the city was his road-house, known throughout the state. Other speakeasies were raided —Zuko's was never touched. 128 POISON UNKNOWN The two men, professor and gangster, were far apart in the social scale. Yet between them was an odd sort of friendship. Out of their many conversa- tions Manners had obtained little glimpses of a world to which he did not belong, a cruel world, in which men who were at war with society faced death almost every hour. Perhaps he should have despised the gangster. He ended by understanding his odd code of morality, and even respecting him to some extent. It did not take Manners long to reach the out- skirts of the city. Ahead lay a white ribbon of road, illuminated by his onrushing headlights. Soon it skirted the shore; and to his right he saw the flash of the lighthouse. After going almost ten miles he turned away from the concrete, to travel over a nar- row country lane that ran toward the lake. He stopped the car, at last, where the way was barred by a high wooden gate. On either side of it a high fence vanished from sight in the darkness. Blowing his horn three times, he waited until the gate swung back. A short, stocky man drifted out of the darkness to the side of the car, flashed a light in his face, then motioned for him to proceed. Not a word had been said; and as he started the car again he saw the man vanish into the night. He drove perhaps a thousand feet from the gate, then came to a stop. Before him stretched the long, irregular outlines of a low wooden building. No sound drifted to his ears, nor when he stepped from the car was he able to see a light. Not until he walked around the side of the building did the single POISON UNKNOWN low-powered electric bulb come into sight. Below it he could see the outlines of a door. He opened the door, and passed down three steps. From far within the house the sound of a buzzer came faintly to his ears. It lasted but a second, then died suddenly away. Above his head was a light, which made the entry he was in like day. Before him was another door, with a closed slot at the level of his eyes—a slot which was softly opened as cold, impersonal eyes searched every line of his face. Then the slot was closed; and the door swung quietly open. He entered a short, deserted hallway, with a door at its farther end. Opening this he stepped directly into the bar. Down one side of the room, forty feet in length, ran a great mahogany bar. There was a frosted mirror behind the rows of tall bottles, and three white-coated bartenders were silently pouring out drinks for the dozen or more in the room. As he walked through, he smiled; the bar was quieter, more orderly than many churches in which he had sat. He came into another hall, this time a short one and rather dark. Halfway down its length was a closed door, upon which he knocked. Silence fell for a moment, then a voice called for him to enter. Pushing open the door he entered the room—a room that would puzzle him until his dying day. It was a large one, with book-cases running around three sides. These were overflowing with books, and books were piled high on the beautiful table that stood in the center. Upon the floor were POISON UNKNOWN 131 whose name was synonymous with crime, should have row after row of poetry was a thing Manners had not tried to analyze. But they were there, as were more rows of biography, and a good many volumes on astronomy. As for the etchings upon the wall, he owned a few Rops himself. But Zuko had almost a hundred and fifty. He must have spent a good deal of money in getting them. The door opened, and Zuko came hurrying back to his side. A long bottle was under his arm, in his hand two small glasses. He placed the bottle on the table, then stood off a few feet and looked at it. A smile passed over the round face, and going to the desk he carefully drew the cork. His face was grave as he poured the pale liquor into the small glasses. "Good brandy, this. You like it. Lots of bunk about Napoleon brandy. Been drank up long, long time ago. This just as good. You like it." Had he told the truth Manners might have con- fessed that he could live a lifetime without ever drinking a drop of brandy. But he raised the glass to his lips and sipped the liquid. Soft and smooth it was, and he slowly nodded without speaking. The gesture elicited a smile from the gangster. Refilling the professor's glass Zuko went over to a nearby chair, and sinking down, watched his visitor. He liked this young man, admired his brain, and enjoyed the few evenings they had sat in this room and talked about books. On those occasions the gangster had dropped his mask and allowed Manners to have a fleeting glimpse into his life. But as he looked over to the other chair he realized his POISON UNKNOWN visitor wanted something tonight. A twinkle flashed into the small eyes: "Want something, Professor?" "Not in the sense you mean it, Joe," was the re- ply. "I do want a little advice from you. Want to see if a theory of mine is correct. You heard about Dr. Langdon's death?" For a moment the fat face steeled into a set ex- pression. "His murder, you mean," came the soft response. Manners gave a start. How did Zuko know Langdon had been murdered? News moved quickly in the criminal groups. If any of their kind had com- mitted the crime Zuko would know about it. He put his surprise into a question. Slowly the mountain of a man took a little sip of the brandy. Then he smiled: "Sure. Murder, Profes- sor. I know about the doctor. A good man, good to the kiddies. He would not commit suicide. If he did not, it's murder. That's how I know—not because of any fact, but just—what do you call it—intuition? Am I right?" Manners admitted he was. As he briefly told his host what he knew of the crime, he was thinking in- tently. One thing he could be sure about: Zuko was truthful. He said he knew nothing about the murder. That would be the truth. He had simply done what Manners himself would have done—used his head. He half-smiled at the thought which came to him. The good people of the state called the man who sat across from him a menace to society. No doubt he was. Yet one thing was certain. Manners knew POISON UNKNOWN every word he uttered within the room would be a locked secret in Zuko's breast. He decided to take him into his confidence. "What do you know about Fletcher?" he asked. A disgusted expression passed over the fat face: "Oh, him—you know. Like all his sort. Cheap women, cheap friends, a cheap man. Saw his wife once. She nice lady. But what about Fletcher? He kill Langdon?" "Good heavens no, Joe. Not the slightest sus- picion of it. But somebody's been writing Fletcher anonymous letters. Wondered if you heard any gos- sip about him, about anything he's been doing. Ro- gan has the idea the letters will explain the murder." Seeing the surprised look on Zuko's face, Man- ners mentioned the chief's theory that a mistake had been made: that Fletcher would have been the vic- tim if Langdon had not taken his seat. Through his recital of facts the round face was expressionless, though once he saw the gray eyes flash with interest. When he paused, Zuko slowly rose, walked to the table, refilled the glasses, then went back to his chair. "I hear things," came his mild confession. "Lots of things. But, Professor, once in a while—say among the Italians—someone gets a Black Hand letter, and later somebody gets bumped off. Some- times it happens. But I don't know anyone's after Fletcher. No one I heard of. Maybe he has been, as you say, running around with some woman. But you know most people who write those sort of letters do it just to frighten someone. They don't kill. I hear POISON UNKNOWN things. Heard some about Fletcher, mostly about women. But know nothing about letters." He paused, then grinned: "He worth so much money that if someone was after him I would know." The small eyes traveled upwards to the wall. They rested upon one of the best known of all Rops* weird and sinister etchings—"Satan semant l'iv- raie." For a second Zuko studied the pictured image of death, then shrugged his shoulders. "Professor, I just remembered. Some time ago, out in the bar, a man raved round a little about Fletcher. Said he was after him. Just remembered it. He runs a small shoe-store on State Street. Was saying something about his wife going out with Fletcher, and that he was after him. But"—there came a shrug of the fat shoulders—"nothing much could be in it." Manners made no reply for a moment. He studied the ship model on the ledge above the deep fire- place. What Zuko had just said had not moved him. True, he would report it to the chief. But no shoe clerk could have shrewdly planned a murder in which an unknown poison was used. He checked this thought by another: after all, one always discovered that every rule had its exceptions. So he asked a question: "Know his name?" There came a nod— "Yes, Tollen. He has never been back here since. I keep the place quiet, as you know. Can't have excitable people talking about get- ting even with people in my place." Manners had to stifle a smile. There was a little POISON UNKNOWN 135 indignation in Zuko's tone. Yet if all reports were true, in this building there had been plotted con- spiracies that had resulted in more than one man's losing his life. To look at Zuko's smooth, calm fea- tures, one would never have guessed he was pre- sumed to be the state's most undesirable citizen. They talked awhile; but it was mostly a general conversation of no particular importance. Once Zuko rose and ambled over to the nearest book- case. The volume he placed in Manners' hand was an obscure novel, but one that collectors had diffi- culty in securing. For a time they discussed it; then, after a glance at his watch, Manners rose to his feet. It was almost eleven, time he was returning. To the end of the small hall he was escorted— Zuko did not enter the bar. With a friendly pat on his shoulder, the big man begged him to return soon, chuckled as he hinted he would like to know all the details when the crime was solved. With that he said good night, and ambled back to his room. Climbing into his car, Manners sat motionless for several minutes, his eyes searching the darkness. Close at hand was the lake; he could hear the water lapping on the rocky shore. Far out over the water was the light of a distant boat, a tiny gleam of brightness in the blackness. Nothing could be heard; and the long wooden building close at hand was simply an outlined shadow. Rather slowly he drove toward the city. Rogan would be sure to base his investigation upon the anonymous letters. To Manners they seemed but a coincidence. Yet—even as he thought this—he de- POISON UNKNOWN 137 There was a house some distance in the rear, but it was dark. Keeping close to a stone wall he fol- lowed it until he was stopped by another. The road curyed to his right and was some distance away. His hands shot upward, gripped the flat top of the wall, and in a second he was on the other side. His first action was to look toward the house. It was some distance off, and there was a light in an upper window. The lower part was dark, and except for the single light there were no signs of life. Turn- ing his glance from the house he started over the grass, keeping close to the trunks of the many trees. He did not care to be seen; for it might be rather awkward to explain what he was doing there so close to midnight. It was very dark under the trees. Their wide- spreading branches, far above his head, made en- circling pits of gloom on the lawn. Skirting what was probably a garage, he turned and followed the stone building. Past it he caught sight of the house. It was but a few yards away, black and silent. At last he reached the shrubbery which fringed the bay windows; and peering through them he tried to look into the dining-room. It was impossible, be- cause of the darkness. There was no light on the first floor, and the windows were but vague, shad- owy outlines. However, when he turned away he had decided one thing. Rice could have looked into that room; but it would have been impossible for anyone else to get so near to the house and to look into it without being noticed by the detective. • His first thought was to return to the car. Some- 138 POISON UNKNOWN thing caused him to change his mind. Fletcher's grounds ended at a high bluff above the lake. Many times Manners had sailed past the place in his speed- boat. It was his idea that a boat-house stood on the shore directly below the bluff, and that a long flight of steps ran down to the water. For no reason at all he was going to satisfy his curiosity. The ground sloped a little as it ran away from the house. There were trees to avoid, flower gar- dens to skirt. The nearer he got to the edge of the bluff the lighter it became. This was partly because the trees had ceased, also because he was approach- ing the lake. But it still was too dark to distinguish any object. He came to the edge of the bluff. Far below, a huge blanket of darkness, lay the lake. He could faintly hear the sound of water, playing against the shore. After walking a few yards he found the steps, steps which dropped away into the blackness be- low. With one hand resting on the wooden rail, he stood hesitating. The shore was at least seventy feet below him, and it seemed rather absurd to descend the long flight of stairs at all. He decided he would go back to the car, return to his house and go to bed. After all, he was beginning to feel tired. He paused, to take one last look into the dark- ness below. A murmur came softly to his ears, the faint lapping of the water upon the shore. But his eyes could not penetrate the gloom. A thick blanket enveloped everything, darkness in which he could distinguish nothing. POISON UNKNOWN 139 Suddenly—in the very act of turning to walk away—he was frozen to attention. He had seen a light. It lasted but a second, and was but a fleeting dot of brightness—a flame which had suddenly flared forth, then was extinguished as if the one responsible for it had tried to conceal it at once. It had flashed from down on the shore, only a few yards from where he guessed the foot of the steps to be. Bending eagerly forward he waited for it to come again. But the darkness remained impene- trable. Suddenly he made up his mind. He would go down the steps. He would try to discover what the light could mean. CHAPTER IX Fear had never played a part in Harley Manners' make-up, but curiosity had. It was the latter that decided him to go down the long steps to the beach. What he would find upon reaching the shore he did not bother to ask himself. One thought only was in his mind. It was midnight—at least close to it—and for a fleeting second he had seen a light; that light should not have vanished so quickly as it had. With a hand gripping the railing for support he fumbled for the first step. The board swayed be- neath him; he skipped it and reached for the second. This was solid—and carefully, groping in the dark- ness, he descended, testing each board before he placed his foot upon it. The steps were close together. Though he knew the beach could not be much more than seventy feet from the top of the bluff, it seemed hundreds. Half- way down he paused, for a moment, listening. Noth- ing could be seen—though he tried to pierce the darkness with his eyes. Nor did he hear anything, except the low ripple of the water against the shore. At last his feet fell upon the crunching sand of the beach. A few yards in front of him was the lake. To the right and left stretched a long tunnel of blackness. He had a pretty good idea where he was. Not for nothing had he sailed the lake in the past few years. Somewhere to the left, not more than a I4» POISON UNKNOWN hundred yards away, was a boat-house. And it was near this he had seen the light. He hesitated a second before starting over the sand. What he was doing was absurd. After all, he was on private property. No doubt the person who had flashed the light had a perfect right to be on the beach. Only one thing sent him forward—the light had vanished so quickly, as though the one re- sponsible for it were very eager that it should not be seen. Carefully, so that there should be no sound, he crept over the sand. Above him, a pool of gloom, towered the dark bluff. Seventy-five feet he went; then a faint shadow loomed before his eyes. It was a dimly outlined building close to the water's edge. He had kept close to the bluff, knowing the shad- ows were darker there than out on the beach. Oppo- site the building he hesitated for a moment. It was a long, low structure, evidently jutting far out into the water—a boat-house without a doubt. He paused, listening. Once he thought he heard a sound close to the water's edge—as though one pebble had scraped against another. But in-a mo- ment he decided he had been mistaken. Strain his ears as he would, nothing could be heard but the water against the shore. He made up his mind to act. There was no effort at concealment; for he de- cided that whoever had been on the shore had gone. Hurrying across the sand he reached the side of the boat-house. His hand fell against the building, to discover that it was made of stone—heavy granite blocks, which felt cool to his touch. 142 POISON UNKNOWN He stood silent a moment, then half-crept to the front of the building. Stumbling against a flight of steps he concluded they led to the entrance. Decid- ing against climbing, he skirted them. With a hand sliding over the stones he moved forward. Sud- denly—his hand slipped off the stones into space. Catching himself, he managed not to fall. His hand explored the dark vacancy. It must be a door, he thought, one very close to the ground, a door that swung inward and was partially open. As' he had stepped from his car, on the road above, he had put a small flash-light in his pocket. He half decided to use it, then changed his mind. But he was determined to see what was behind the half-open door. That anyone was inside he doubted. No sound came creeping through the blackness. Reaching into a pocket for a match he struck it against the cold granite, a little above the level of his head. There came a tiny sputter, then the bit of wood leaped into flame. For a second the darkness was illuminated—then the match went out. Just as the flame vanished, in the very act of reaching in his pocket for another, he heard a sound —a faint scraping noise, as if someone might be creeping over the sand. Suddenly he knew he was not alone on the beach. A half-step was taken— then out of the darkness came a blow. Aimed evi- dently at his head, but falling on his shoulders, it was a tremendous blow, which caused him to stag- ger. Before he could regain his balance there came a half-shove, a vicious push—and he went hurtling through the open door. POISON UNKNOWN 143 So sudden had been the attack that there was no time to try to save himself. Rolling over and over he went bumping down a flight of steps, sliding over a hard, wet floor. With a thud, a shoulder crashed against a hard wall. From out of the darkness came a loud bang—as though a door were being slammed shut. He did not stir for a moment. He was not badly hurt, but his shoulder burned like fire. He was lying on a floor that was very wet and slippery, and his extended hands were in little pools of water. The darkness was intense. And nearby could be heard the sound of water—water beating against a barrier. Pulling himself into a sitting posture he realized he was not badly hurt. True, his shoulder ached, and no doubt his clothes were torn. But his chief feeling was one of chagrin. Lighting the match had not been an intelligent action. The tiny flame, play- ing across his face, had given him away. He should have known better. A hand slipped into the pocket of his coat. The flash-light was found and brought forth. Struggling to a standing position he groped along a wall. It was made of wood, and felt damp and cold. Rais- ing his arm above his head he found himself unable to touch anything. A recollection of that sound, heard as he had gone sprawling over the wet floor, came back to him —a sound like the closing of a door. There seemed little doubt he was alone in the boat-house. A search- ing finger found the clasp of the flash-light, and pulled it back. The ray of light broke the darkness. POISON UNKNOWN 145 As he heard the sound of the splashing water his first thought was that the partition had been raised. Hurrying across the wet floor he played the flash- light over the wooden barrier. It was in place; and there was not the slightest sign that any water was seeping in around the edges. Yet the sound of the f ailing water continued—and it was growing louder. The light swept over the walls, wooden walls, wet with slime. Then—to his horror—he saw an open- ing. It was above his head, a circle twice the size of his arm. Through it a stream of water was pouring into the slip in which he stood. For a moment, unable to move, he stared at the falling water. He knew what it meant. Separated from him by only a few inches of wood was a second slip. There must be some arrangement whereby the slip he was in could be filled, without opening the heavy partition which kept out the lake. This ar- rangement had been put to use. If he did not act quickly he would drown like a rat in a tub. It was like Harley Manners to light a cigarette first—then think. His gesture was not one of defy- ing Fate, but simply a subconscious motion. He would have to act in a moment and act quickly. Deep down in his heart he wondered if there was anything to do. Ten feet above the floor was the wooden cover- ing. The hole through which the water was pouring was perhaps two feet below this. Reach it he could not; and even had he been able to do so, he could never have prevented the water from coming through. It was running in a heavy stream now, and POISON UNKNOWN to that. Whoever had thrown him into the slip had known who he was, must have known—for his face had been seen as he lighted the match. There came an ironic smile to his lips. He was always telling his students that their actions would be judged ac- cording to the intelligence they used. His own action had been far from intelligent. The water was almost over the first step, creep- ing upward in a swirling motion that he did not care to look at. Moving back a little, a foot slipped, and went slamming down on the first step. To his surprise the board moved, swayed beneath his weight. With a leap he plunged to the floor, the water splashing across his ankles. Bending down, his hands reached under the heavy board. There came a tug, a strain. The step moved—he heard a creak. Again he pulled, giving a sudden upward twist of his body. As he did so the board came loose. It was a heavy one, five feet long, and over an inch thick. Good substantial wood, he thought, and for that he was glad. At least he had some sort of instrument with which to attack the trapdoor. There might not be much chance of escape. But whatever there was he would take. Standing on the second step, he raised the board and gave a violent blow upon the trapdoor. The sound went reverberating through his prison. Again and again the action was repeated; until there came a moment when he had to pause and rest. A downward look showed that the water had crept to the level of the second step. It swirled and i48 POISON UNKNOWN moved under the Impact of the falling torrent. Dark, sinister-looking water, it made him give a little shiver of disgust. In a sudden burst of energy he turned, to attack the trapdoor again. All at once it swayed a little. Another blow and there came a creaking noise, as the board splintered. He rained a torrent of blows upon the trapdoor. Blow after blow—all were delivered at the same spot. Then—with a suddenness that almost caused him to lose his balance—the board gave way. Desperation gave him increased strength. Attack- ing the edge of the broken board, he sent it whirl- ing into the darkness with three blows. He passed on to the next—and when it fell with a splash into tJie water, which was now over his shoes, he knew he had won. A hand reached through the opening, to fumble over the remnants of the door. There must be a bolt somewhere, and his creeping fingers searched in the darkness. At last it was found: an old-fashioned, heavy bolt, which took but a moment to slip loose. A shove, and the trapdoor fell backwards. Not a moment did he waste. Pulling himself through the opening he scrambled to his feet. One quick sweep of the flash-light revealed that no one was in the boat-house. He had not expected to find anyone. Whoever had pushed him into the slip, and allowed the water to run in, had wished to kill him, but intended to be far away when his death took place. Standing by the square opening he allowed the light to travel down to the dark water. It was well POISON UNKNOWN 149 over the second step now, coming upwards with every swirl. A few moments more and it would have covered him. With a little shiver he turned the light on the room in which he stood. The boat-house was evidently divided into two parts. A wooden partition shut off one side, and be- yond it a boat would be lying in a slip. The room he was in was cluttered with rope and various odds and ends. There was even a chair dose to the oppo- site wall, and seeing it, he crossed and sat down. Now it was over, he realized how narrow had been his escape from death. The boat slip was of the type which had a door to keep out the lake. It would take almost nine feet of water to fill it. Per- haps he might have stood on the steps and kept his mouth above the water. But sooner or later his strength would have vanished, and wearily he would have slipped down to his death. His death! What he had just passed through seemed incredible. Why should anyone have wished to kill him? What had he stumbled upon ? All he had seen had been a light upon the shore—a momentary flash of brightness in the darkness—yet he knew that in some mysterious manner it had been con- nected with what had taken place. The light had been seen near the boat-house. As he thought this he rose, and began to examine every inch of the room he was in. The door had been open, and it was very probable that whoever had carried the light had been in the building. But why? The room was littered with all sorts of articles. Evidently it was more a storehouse than anything else. POISON UNKNOWN There were bits of rope, broken-down barrels and boxes, an outboard motor and even a few magazines. No fear that his light would be seen outside the building troubled him. The door was closed, and there were no windows on this side of the boat- house. A quick examination revealed nothing of any mo- ment. True, his eyes did rest for a second upon a rusty saw. It lay on a barrel, and little pieces of saw- dust were clinging to the brown teeth. But this was of little interest. There was nothing in the room which gave a hint that anyone had been there at midnight. The thought made him turn the light on his wrist watch. Its hands stood exactly at one o'clock. He had been in the place almost an hour. Time he was leaving. He rose slowly to his feet. There was a dull ache in his shoulder, and the gray suit was torn and soiled. He hesitated, before flinging open the door. But as he slipped the catch of the flash-light, putting it out, he assured himself there would be no one out- side. Whoever had been there had long since de- parted, and by now would be far away. Thinking this, he gave the door a shove, and a second later stepped into the night. The air felt fresh and cool. It was lighter now, for a faint moon was beginning to break through the clouds. The lake, a moving mass of silver, could be dimly seen. Above him the bluff vanished in a vague pool of darkness. He was both disgusted and perplexed—disgusted POISON UNKNOWN 151 because he had fallen into a trap, perplexed because he could only wonder what it might mean. The at- tack upon him seemed an absurd thing, without any reason behind it. And it had been no ordinary at- tack. The man had intended he should die. With a faint sigh he started over the sand, walk- ing in the direction of the steps. The flash-light had been replaced in his pocket. It was not needed. The moon, pale though it was, allowed him to distinguish the objects before him. And it was growing lighter every moment. He paid little attention to his footsteps. The sand was soft, crunching under his feet. A sudden breath of air moved across his cheeks, promise that a breeze was coming. Ahead, the long steps rose like an etched black line above his head. And it was at that moment he saw the sinister-looking shadow ly- ing at their foot. One swift glance, then he started forward on a run. It was a shadow sprawled in a grotesque, hor- rible fashion at the foot of the steps—a shadow that did not move; and for some reason it filled him with sudden terror. As he reached it, though his trembling hand fum- bled for the flash-light, he knew he did not need it to recognize what lay at his feet. But he pulled it forth and at last managed to slip the catch. Hardly dar- ing to look he swept it over the motionless object at his feet. Lying upon the sand, her head thrown to one side in a strained position, was a woman. One hand was outstretched, the slender fingers clutching deep 152 POISON UNKNOWN into the sand. The black dress was far above her knees, and several inches of flesh gleamed white under the light. The face he could not see. But as he slowly sank down on the sand he did not need to see her face to know who it was. Gently his arm slipped under the dark hair. Carefully the head was raised and turned in his direction. One quick look, and he allowed it gently to fall back. There at his feet—with a little pathetic, wondering smile upon her still, cold lips—lay Ann Fletcher. For her the world had ended. CHAPTER X Very slowly Manners dropped down on the sand beside the still figure. A hand reached forth, care- fully touched the soft cheek. It was still warm. How- ever death had come, its visit had been only a few moments before he burst his way out of the slip. As he thought this a great wave of anger swept over him. There by his side lay Ann Fletcher. Never again would that dark head be proudly carried. The sensi- tive lips were silent forever. He had seen her but twice; yet he knew as he knelt beside her still body that she was one of the most beautiful women he had ever met. And now—she was dead. Rising slowly to his feet he stood looking out toward the dark lake. His hands were clenched at his side; his lips were a straight line. What had hap- pened seemed very clear; she had fallen the length of the steps; and the fall had killed her. But as he turned to look up at the shadowy outline of the bluff a warning passed over him. What had she been doing on those stairs after midnight? Why had she left the house? Whom had she been going to see? No ordinary errand had brought her out of the house in the darkness, to descend the steps to the shore. That was certain. There was but one thing to be done. It would be the most distasteful message he had ever sent over 153 POISON UNKNOWN 155 boat-house. It was a rusty saw, but bits of sawdust had been clinging to its teeth. The significance of it all swept over him. She had fallen down the seventy steps—but it was no accident. Someone had known she would go down these steps and had cut away the first one, so that when she trod upon it she would be thrown seventy feet to the shore. Her death was not an accident—it was murder. Murder ... an ugly, vicious, cruel murder. . . . As, with a leap, he jumped for the edge of the bluff, he swore an oath with himself. Down on the sand lay the body of what only a few moments before had been a beautiful, charming woman. She was dead—murdered. And as Manners turned and faced the lake he resolved to himself that he would bring her murderer to justice. There was no time to lose. Turning, he started on a run across the grass. Ahead was Fletcher's house, where he could telephone to the city. Whom he would find at the house he had no idea; he doubted if there would be anyone but the servants. Fletcher —somehow he did not expect to find him home. It was much darker on the lawn than it had been on the shore. The moon was climbing. But under the trees were pools of darkness. He could see the house now, outlined in the distance, noticed there was a light in the upper story. Someone was up; and for that he was glad. He came off the lawn directly in front of the bay window that looked into the dining-room. Still run- ning, he continued down the length of the house. It was as he came around the front that he saw the i56 POISON UNKNOWN figure crouching on the grass. Too late, he tried to avoid it. As the crouching figure started to rise to his feet Manners went banging into him. For a second he tried to keep his balance; then went plung- ing to the ground. So unexpected had been the encounter that the crouching man was taken by surprise as completely as Manners. Yet he was the first on his feet. Scram- bling up, without casting a look around, the man be- gan to run. As he started over the grass Manners sprang to his feet and set out in pursuit. It was only a short chase. After they had crossed the pebbled drive he was almost at the man's heels. His voice rang out in a command—the flying figure did not halt. Instead Manners saw a hand go reach- ing down into a pocket. On the instant, he flung him- self forward at the man's legs. In a tumbling heap they went rolling over the ground. Once a hand brushed Manners' throat; but he flung it aside. As a conflict it was soon over. The figure he was grap- pling with was slight, and the thin arms seemed to possess little strength. As Manners' hand clasped the man's throat he suddenly ceased to struggle, and lay quiet. Rising to his feet he pulled the fugitive upright, as his hands went searching into the pockets of the man's coat. His fingers closed over a cold, flat sur- face—and came forth with a gun. Even in the dark- ness he knew it to be a vicious automatic. Pressing it into the man's side, he spoke: "You're going to walk over to that house, go up those steps, and stand there while I ring the bell. POISON UNKNOWN 157 Any trouble, and I will use your own gun." There was no reply. All desire for battle seemed to have left the other, and he started obediently toward the house. A foot behind him, the gun in his right hand, marched Manners. Who the man was he did not know—young, evidently, not over-strong, and of slight physique. Why he had been crouching in the shadow of the veranda Manners intended to discover. 'Up the steps they walked, then to the front door of the house. There was no light in the hallway; but as Manners reached out to push the bell he saw that the door was slightly ajar. Throwing it open, and at the same time pushing the bell button, he motioned for the man to enter the hallway. Searching the wall for the light button—which he knew was there—he found it. Suddenly the hall sprang into light. As it did so, the man in front of him quickly whirled. The face was that of a young man, white, pleading, and badly frightened: a fairly well-dressed young man, though the suit was a little loud, and Manners would rather have died than be seen in the necktie. In a voice which went ringing through the hallway, the man broke into speech: "Professor Manners, let me go. Don't turn me over to the police. I have not done anything. Let me go, let me go!" That he was recognized was no surprise to Man- ners. The mention of his name, however, did prove one thing. This man must live in the city. Before answering, there swept over Manners the thought of the slight, silent figure lying upon the beach. An 158 POISON UNKNOWN angry retort was leaping to his lips when there came a loud'scream from the stairway; a long, piercing scream which shrilled hysterically through the house. Both men whirled. On the first landing of the stairway leading to the second floor was a maid. Her face was twisted with fright, while her staring eyes fixed their glance on the gun in Manners' hand. As they dropped further, to his torn and disheveled clothes, she screamed a second time. There was but one thing to do. Shoving the man a little to one side, Manners tried to calm the frightened maid. By this time he had managed to make her understand his name, two more women had thrust their heads over the railing: women who he knew were servants, and who had evidently re- tired for the night. Telling them to go back to their rooms and dress, he again turned his attention to the maid. Though it seemed she had been calmed by the mention of his name, yet the gun which he still held in his hand appeared to terrify her. Again and again her startled eyes crept down to give the weapon a frightened look. It was with great difficulty he man- aged to persuade her, reluctantly, to come down to the first floor. Time was precious; and from the woman before him—bewildered by their presence and badly shaken —there were several things he wished to know: questions which he felt must be answered before he could call the police-station. "Where is Mr. Fletcher?" 160 POISON UNKNOWN the door at his left. It occurred to him that it must be the library he had been in the previous evening. With a request that she switch on the lights he turned to the man: "Go in that room and sit down in a chair. I prom- ise you that if you have been up to no harm, I shall see you get into no trouble. But if you try to slip away . . . why . . ." he made a motion with the hand holding the gun. The man nodded eagerly and started to speak, only to fall silent before the wave of Manners' hand. At the motion his captive hastened into the library; and the speed with which he took a chair showed Manners he need have no fear of an at- tempt at escape. The telephone was on a stand near a tall book- case. Just as his hand reached out for the receiver the maid started to leave the room. A command made her turn, gave him one frightened look, then obey. As she seated herself on a sofa he saw her face: it was terrified, yet at the same time eager. With his hand on the receiver he hesitated. It was very late; Rogan would have gone home, and there was little chance Kent would be in his office. He not only needed both of them, but the doctor must be reached, and also several plain-clothes men. The moment his call reached the station it would spring into life: and he knew the consternation it would cause. Another murder at the Fletcher estate ... he could see it in headlines. This time the gracious mis- tress of the house. No doubt about its being mur- POISON UNKNOWN 161 der—no doubt about how it was done. All at once he gave a start. The maid had said there had been a 'phone call—for Fletcher. Had that step that someone had sawn through been a trap for the master of the house: a trap into which his wife had fallen? He stopped thinking, to yank the receiver from the hook. There was a long wait; then a sleepy operator asked the number. Long before the police- station answered he had concluded they must all be asleep. Then came a voice, slow, deliberate. And to Manners' surprise he was told that Kent was in, though on the point of leaving. He had to wait several minutes before the in- spector could be located. But at last came Kent's rough voice, sounding a bit impatient, and decidedly sleepy. Only for a second, however; when he dis- covered who was speaking his tone changed to one of consternation. "Kent—this is Manners. I am at Fletcher's. There is trouble out here. Get me—it's the real thing—I don't want to say more." There was hesitancy at the other end of the wire, and he knew the inspector was digesting his words. The maid and the man were behind him, and he did not wish to say more. There came Kent's voice; all impatience had vanished, only astonishment and eagerness remained. "You mean murder?" "Yes. The woman this time. You will have to get Rogan and, of course, Bell. And I think you'd best bring at least three patrolmen, and your fingerprint man and photographer. And Kent—don't ask any i62 POISON UNKNOWN questions, but hurry. It's not very pleasant up here just now." A gasp of astonishment came over the wire, fol- lowed by a short: "All right." As the telephone be- came silent, he pictured the police-station. Buttons were being pushed, bells were ringing. In a moment cars would come rushing out of the police garage, as hurrying men leaped for their equipment. And then, strange to say, he thought of Rogan's old police superstition: the first visitor to a new police-station brings a murder. This time there had been two. Turning, he cast a glance at the man and woman behind him. He had tried to be non-committal in his message, but he saw that both were badly frightened, though it was the man who seemed the more upset. For a second he studied the thin, white face; then made up his mind what he would do. The woman must be got out of the room. He made an excuse: "Suppose you round up the cook and have her make some sandwiches and coffee. The police are coming. There has been a little accident, and they will be here soon—hungry, you know." The haste with which the girl rose from the sofa showed how glad she was to leave the room. Not until he heard the sound of a door closing at the end of the hall did he turn to the man. Just about to open his lips, he heard the same door reopen, and there came the sound of footsteps hurrying down the hall. The woman had come back to stand in the door- way—some excuse of a question, he supposed. But he was glad she had; for there was one thing he had POISON UNKNOWN 163 forgotten to ask her. Giving her no chance to speak first he shot out: "You said someone called on the telephone: wanted Mr. Fletcher. Was it a man or a woman?” "Oh, it was a man, sir. The voice sounded a little familiar, but I did not quite recognize it.” "Do you think Mrs. Fletcher recognized the voice ?" The girl threw him an astonished glance. "Why, sir, if she had not recognized it, she would never have gone down to the boat-house at this hour.” She was right. No woman would cross the dark lawn, go down those long steps to the lonely beach, unless she knew for whom she was going—whom she would meet. Before he could even try to theo- rize, however, the woman spoke again: “Will you want a good many sandwiches, sir?" Impatiently he sent her away with instructions to make several dozen. Then again he turned to the man, who was sitting on the very edge of the chair, clasping and unclasping his hands. Seems rather harmless, thought Manners, but you never can tell. Besides, what had he been doing in Fletcher's yard at midnight, hiding by the veranda with a gun in his hand? Into a pocket he reached for a cigarette, lighted the yard?” "İ-1-just wanted to see Mr. Fletcher," came the stammering reply. “I was not going to do him any harm." "And you hide by his veranda at midnight, with 164 POISON UNKNOWN a gun in your pocket!" was the ironic retort. "I know it seems foolish, Professor. But—" "What's your name?" "Tollen, sir. I have a little shoe store on State Street." Manners' eyebrows rose a little: Tollen. That was the name Zuko had mentioned: the man who had made threats against Fletcher; who had been forbidden ever again to enter the speakeasy. If Fletcher had not gone to Canada there might have been a third murder. Yet as he looked at the man he wondered if he would have had the courage to use the gun. "What was the trouble?" A flush passed over the thin face. Tollen's lips worked, then he leaned far back in the chair. "He had been running round with my wife. I wanted to frighten him." "And did you expect he would be frightened?" "I don't know, sir. I—I—just wanted him to leave my wife alone. She was flattered by his money, and it was not fair, Professor. He has everything. I just wanted him to leave my home alone. Why, I even wrote to him." An uneasy thought swept into Manners' mind. "You wrote to him. Did you sign your letters?" "I did the first one. But the last two I didn't sign." There came an appealing look, one which begged his interrogator to believe him. "You see, I thought I might frighten him: frighten him so he would leave the city for a while." The cigarette between Manners' lips had gone POISON UNKNOWN 165 out. Whatever might be the truth in Tollen's story, one thing was certain. The man was in for trouble, and for a lot of trouble. Rogan was looking for a motive for the murder; when he heard Tollen's story he would say he had discovered it. But as he thought this possibility over, Manners realized that as a theory it would not do. The chief believed the doctor's murder had been a mistake: that Fletcher was the intended victim. He had only to glance at this man seated before him to know he would never have used poison. What was more, it was to be doubted whether he would ever have mistaken Langdon for the man he hated. Kill, this man might. But his killing would have been done in a sudden burst of rage, and with a gun. To plan a murder shrewdly, then execute it carefully, would be beyond the powers of the man sitting in the chair across from him. Yet the first motive to raise its head had just come forth. "Were you up here last night?" Manners asked. There came a violent shake of Tollen's head. Eagerly he assured him he had never before been on Fletcher's grounds. The previous evening after com- ing from the store he had remained at home. He had not left the house at all. Manners believed he was telling the truth. There were other questions he might ask. But he was weary; and he could not put from his mind the thought of Ann Fletcher. Alone she was, and though she would not mind the darkness and the silence now, yet somehow he wished there were someone be- side her. The police were taking a long time. His 166 POISON UNKNOWN shoulder ached; he was very tired. If there were other questions to be asked, let the police ask them. They would. When Rogan had done with him Tollen would wish language had never been invented. Nervously, another cigarette was lighted. As a rule nothing bothered Manners. But he was troubled now. More to seek distraction than for any other purpose, he turned to study the contents of the tall book-case at his right: an old-fashioned book-case, with leaded glass doors. Perhaps a hundred books stood upon the shelves, books whose titles could easily be read. They rather puzzled him; for they were not at all what he would have expected to find in Fletcher's house. Half of the shelves were filled with old volumes whose faded titles indicated they were dreary works about New Zealand and Australia. Manners knew books; they were his outstanding interest. But most of the books behind the glass doors he had never heard of. And as he read the titles he guessed that no one else had. A sound came drifting into the room. Cars were approaching the house—cars driven at high speed. As he turned to look through the windows, the gleam of a headlight flashed into the room. It van- ished only to be replaced by a second; and when that passed there came the light of a third car. The police had arrived. Manners had not bothered to close the front door, and he knew the maid had not done so. There were lights in the hall, and Rogan would of course come directly into the house. He heard the sound of POISON UNKNOWN 167 brakes being applied; then the noise of the motors died suddenly away. Voices came, and he heard foot- steps hurrying down the hallway. He met Rogan at the door of the room: a grumpy Rogan, who gave him one astounded look, raising his eyebrows as he observed the sad plight of Man- ner's suit. Something has happened, thought the chief; never saw Manners so soiled, or wearing such a torn suit. And then he noticed the man sitting on the edge of the chair, and the gun in the professor's hand. "What in—" he began, as Kent and Bell crowded with him into the room. Behind them were the inter- ested faces of the patrolmen. Manners only gave a little shrug of the shoulders. What he had to say had best be said with Tollen out of the room. He waved in the direction of the chair. "Rogan, you will want this man. Treat him de- cently, though you are going to be astonished at his story. Better send him out to the car with one of the men you brought along." For a second the chief scowled at his friend. He had been pulled out of a deep sleep by the insistent ringing of the telephone. Kent's voice had been ex- cited; he had hinted at another murder. The last thing in the world Rogan wanted was another crime. He was grouchy as well as half-asleep. But when he looked into Manners' grave eyes, he suddenly be- came wide awake. There was trouble, and without doubt serious trouble. Protesting, Tollen was led from the room. As the sound of the footsteps died away Rogan spoke: 168 POISON UNKNOWN "Snap into it, Harley. What's it all about? We had enough trouble up here last night. Why the—" "Rogan," came the weary voice, "down on that beach you're going to find the body of Ann Flet- cher." He had to pause as he thought once more of what he had discovered at the foot of the steps. Rogan made no effort, for a moment, to break the silence. He saw the fine lips tighten in a straight line, noticed Manners showed more emotion than was his custom. Then, as there came no further words, he had to ask the question in his mind: "You mean—" There was a nod. "It's murder: clear-cut murder. You'd best have Bell and Kent get down there at once." With a shrug of his shoulders the police doctor placed his bag under his arm and started for the door. With one foot in the hallway, he turned to throw a disapproving look at the man who had given the command. "I only wish, Manners," he drawled, "that you would discover your bodies earlier in the evening. It's a bit too much to be called out at two in the morning." "You want to watch the first of those steps that lead down to the beach," was the only answer. "It's been sawn through, and is now broken off. And, Kent, in that boat-house you will find the saw. Take it, keep your eye on it, and better have your finger- print man go over it." With a look at his chief, who nodded briefly, Kent grabbed Bell's arm and the two officials vanished. Rogan cast his eyes curiously over his friend. The 170 POISON UNKNOWN but a few moments. His face softened for a second —hardening again as he recalled that he now had two murders to solve: two murders, and without a doubt they were connected. Finally, with a gesture toward the door, Rogan suggested: "We better be getting down to the shore." Manners slowly shook his head. "Rogan," he said wearily, "I have had about all I can stand for to- night. I am not going down to the shore. I've given you every fact that I know. For tonight at least you go it alone. Tomorrow will be another day." As they came out on the grass he watched the chief turn in the direction of the shore. For a mo- ment his eyes followed the heavy figure, then looked upward. Above his head myriads of stars glimmered cold and pure in a dark sky. A faint breeze fanned his cheeks, and there was the slight whisper of wind in the leaves. He stood motionless for a time. Then, with a little sigh, he turned toward his car. Past the three police machines he went, the gravel of the walk crunching beneath his heels. He was worn out; and he lurched a little as he stepped. Though his car was only a short distance beyond the wall enclosing the estate, it seemed the longest walk he had ever taken. And though he did not wish to think, some forgotten fact kept trying to pierce his consciousness. What it was he had no idea. He found the car, where he had left it, wearily climbed into the seat, then slowly fumbled for the cigarette. As his hand fell upon the wheel there leaped into his consciousness the forgotten memory. CHAPTER XI When Manners entered his breakfast-room the next morning he received a disapproving look from his housekeeper. It was long after ten; furthermore, she had heard him come in at some unearthly hour. Nor had she failed to observe the gray suit flung carelessly upon a chair. Its torn and soiled condition shocked her Scotch soul; she would have given a great deal, also, to know how he had managed to get it in such condition. As she set the breakfast on the table, she laid the morning newspaper close beside the plate. To her surprise he did not pick it up, though it was his invariable custom to spend the first few moments at the table in glancing at the news. She decided it was time to speak: "Professor Hoff called you. Three times he did. That man never knows what he wants." (She thought of the toxicologist—and shook her head.) "First he wanted to see you at eleven. Then he said he would see you at twelve. The last time he changed it to one. You are to go to his laboratory. The poor man seemed excited, all mixed up in what he was saying." Seeing that there would be no reply, she shrugged her shoulders. "And the police-station called you, sir. It's my belief you would be far better off writing 172 POISON UNKNOWN 173 your books and leaving those policemen alone. They want to see you this afternoon." For the first time in many hours a faint smile crossed Manners' lips. She bullied him, watched over him, worshiped him a little, but Mrs. McNeil would never get over her distrust of the police. Even Rogan, whom he suspected she liked deep down in her heart, was treated rather curtly when he came to the house. And the sight of the torn gray suit must have caused her misgivings. He did not open the paper until after breakfast. It was a clear, warm morning, with not even the hint of a breeze. Out on the lawn he could see the robins; and under one of the elm trees lay the sprawled-out figure of his dog. Deciding to read his paper under the trees he made several trips from the veranda to the lawn. First a small table was set in the shade of a tall tree; then came a garden chair; and a third trip was neces- sary for paper and pencils. These were placed on the table, and, sitting down in the chair, he lighted the first cigarette of the day. For a while he gazed languidly over the lawn. To his left stretched the rambling house, its side covered with the red roses of July. The lawn ended at an ivy-covered wall, and beyond it, far in the dis- tance, could be seen the smooth blue surface of the lake. Satan had risen to greet him, but deciding his master was going to stay for some time he dropped down at his feet to sleep. It was a peaceful view, undisturbed by sound. Oc- casionally a bird would call; but there were no noisy POISON UNKNOWN cars rushing by on the road. His house was too isolated for traffic to disturb, the main roads so far away that no sound from them could creep into his retreat. With a half-sigh he opened the paper. One glance at the front page—and he sat upright in the chair. There were heavy headlines, letters black and large, spelling out the story of murder: of two murders, for after one swift glance at the news columns he saw that Rogan had given out the story of Ann Fletcher's death. What was more, the chief had not minced his words. He had called it murder. When the paper had been allowed to fall to the grass, Manners realized he knew no more than be- fore. He himself indeed was in possession of more details than had been furnished the paper. No men- tion was made of the anonymous letters Fletcher had received. Little was said about the poison. True, the news account mentioned that Langdon had died of poison; but that Hoff was even now trying to dis- cover what the poison might be was not reported. Knowing Rogan as well as he did, the news story told the professor a great deal. It was not so much what was said as what had been left unsaid. The chief was always free in giving out information to the reporters; that is, he gave them all the unim- portant facts he wished them to know. But his real theory never saw the light of day until he was willing that it should. He had omitted any mention of the anonymous letters: without a doubt that was the theory he was working upon. Though the chief had not said so, POISON UNKNOWN 175 Manners was certain that he believed the woman's death was linked with the doctor's. What was more, Rogan had been very positive in his statement that Langdon's death had been a mistake: that Fletcher had been the intended victim. It might be true—of the first murder. But could they say the same thing of Ann Fletcher's? The maid had mentioned that the 'phone call had been for the woman's husband. If he had been at home no doubt he would have hurried down to the boat- house. In that case it would have been his foot that would have fallen upon the damaged step. It would have been he who plunged down to his death. He thought this over for a time.. It appeared logical. If Fletcher had been home, he would have been the victim. This idea was all that was needed to bolster up Rogan's theory: that Fletcher was the one whom the murderer had been after on the night of the doctor's death. The chief would now say an- other mistake had been made: that the woman's death was an accident. Two mistakes—leading to two murders, only a little more than twenty-four hours apart. Rogan's theory that Langdon had been mistaken for Flet- cher might be true. Could they say the death of Ann Fletcher was the result of a mistake? The fact that the telephone call had been for her husband did seem to show it had been intended he should go down to the boat-house. But two murders . . . and both mistakes? It did not seem reasonable. There came a second disquieting thought. Who- ever had used the telephone had asked for John 176 POISON UNKNOWN Fletcher. The maid had said he was out. Then the voice had asked for his wife. She must have known who was talking, for she had not been disturbed by the call. No woman of her type would go out of the house at one o'clock in the morning, intending to descend those long steps to the dark beach, unless she knew whom she was going to see. That at least seemed logical. And this brought another thought. It had been Manners' idea that whoever sawed the step away also made the telephone call. But if this was true, it led to confusion. For it meant not only that the caller had been willing Fletcher should be killed; it meant something else: and the something else seemed absurd. It meant that the murderer was per- fectly willing, if he could not kill the man, to kill his wife. Manners puzzled over this for a time, in the end abandoning the thought. He could see no way to reconcile the two conflicting ideas. There had been cases where a person had been murdered by mistake. But he knew of none where the mistake had occurred twice. Even as he was thinking this, he could hear Rogan's voice growling out arguments to prove it was possible. Ann Fletcher's death did make one thing clear. It explained the attack made upon him at the boat- house. Just how long he had been in the slip he did not know; perhaps not much over forty-five minutes. Had he not fallen victim to the attack made upon him he might have been able to prevent the woman's going down the steps. Deep down in his heart, all POISON UNKNOWN 177 the while, he knew this thought was false. He would not, in any case, have stayed forty-five minutes on the shore. He thought of Tollen. The man had been hiding by the side of the veranda, with a revolver. But somehow he could not fit Tollen into the crimes. One thing made it seem impossible: the shoe clerk could not have planned and executed a murder so shrewdly thought-out as the first one had been. He might have been able to plan the second; but he would have no motive for the woman's death. No motive? The man was crazed with jealousy. Women can do that to a man—whip him into a rag- ing fury, make him incapable of thinking of the con- sequences of an action. An unbalanced mind might have struck at Fletcher through his wife. But Tollen was not unbalanced. He was simply a very emo- tional, low-grade person, and he did not seem the type Manners was seeking. Motive? Until that was discovered, it would be difficult to find the criminal. He thought of the usual reasons for murder. Most of them would not fit. Fear? That was behind most murders: fear of ex- posure, fear of a hundred things. Revenge? Only if he was able to believe Tollen guilty could he assign revenge as the motive. Revenge, he knew, was the motive the chief would speak of. Yet somehow he could not picture the shoe clerk as committing the first crime. Its technique would be beyond him. If there had been but one death one might hazard a theory as to the motive. Fletcher had his cheap amours: the wives of clerks, shop girls, emotionally POISON UNKNOWN stead he watched two blue-jays flickering through the trees; studied the gay-colored flowers in his gar- den; wondered a little why a mass of red roses climbing over a house should be so beautiful. Then at last he looked at his watch, and saw to his sur- prise that it was almost one o'clock. At exactly a quarter-past one his blue roadster came to a stop before the chemistry building of the University. With a pat on the brown head of his dog, he hastened from the machine and into the building. He found Hoff's door open, and as he en- tered the laboratory the toxicologist carefully placed a test-tube in a rack and turned to glare at the in- terruption. One look and, with a little cry, the man slid off the stool and came across the floor. "Harley—" burst out the shrill voice— "Harley, what did you bring me last night? Broken bits of glass and a green stain. And almost all night have I worked with that. And what did I find? Nothing. Nothing at all." "So you haven't found anything of value?" For a moment Hoff threw him a disgusted look. Then hastening to his table he pawed over a mass of pamphlets, discovering under an inverted bowl the crushed package of cigarettes he was seeking. Climbing back on the stool, he applied the match and blew a long curve of smoke toward the ceiling. "Harley," he said gravely, "you have had me up in the air all night. I was able to make stains, and even get a faint solution from what was on those bits of glass. But to save my life I don't know what it is. It's an alkaloid of some sort; and in a crystalline i8o POISON UNKNOWN stage had been made soluble by pure alcohol. But what it is I do not know. Think of that!" "So it's not poison," was the grave retort. Hoff slid off the stool. "Of course it's poison. But what kind of poison—that's the thing I can't an- swer. It's my idea the solution if injected into the blood stream kills in a moment. But think of it, Har- ley: you bring me a poison I know nothing about; one that's not in any book on toxicology! That's why I'm upset. And there is another thing: I only got a slight trace of the stuff from those bits of glass—my solution was very weak; but when I touched my lips and tongue with it I got the same reaction one obtains from aconitine. Know what I am getting at?" Manners returned Hoff's shrewd stare: "You mean—" he began. "I mean this, Harley. You remember in Lang- don's case we got the reactions of both aconitine and strychnine. Yet because some of the symptoms were missing we decided it could not have been either of those poisons: decided that it must be something that resembled them both, yet varied in some of its reactions. Well, whatever was in that glass is the poison. That's what killed Langdon." Came another shrug of the shoulders, and he con- tinued: "You see, the oddest thing of all to me is to find a poison I know nothing of. That makes it seem certain Langdon's death was carefully planned." "But Rogan claims he was killed by mistake, you know," was Manners' rejoinder. "Claims that Flet- cher was to have been the victim." 182 POISON UNKNOWN tolerant man, Stone had served as police commis- sioner for five years. His wealthy friends joked at times over his office; but the lawyer smiled and went on allowing Rogan to run the department without interference. They had never had a real disagree- ment. "Harley," began the commissioner, "I am glad you are here. I have been looking at this case through Tim's eyes. God knows, Rogan insists that the death last night was an accident. Says it was her husband they were after. What do you think?" Manners told him what he thought. Also he men- tioned to Stone the maid's statement: that the voice over the wire had first asked for Fletcher, then for his wife. This led the commissioner to comment: "If Fletcher had been home at the time, he would have been the one to go down the steps. That's just what Rogan's been telling me." It was just what Rogan proceeded to tell them both. Roughly, and somewhat profanely, the chief insisted that it was Fletcher the murderer was after, not his wife. His voice was hoarse, and Manners could see he was in sad need of sleep. There were dark rings under his eyes, and his temper was far from even. When he stopped, Manners asked a question: "You say they were after Fletcher. But why was it they asked for his wife when it was discovered he was out? Why did that woman leave the house and cross that dark lawn at midnight? Why was she hur- rying to the shore? Do you think the murderer did i84 POISON UNKNOWN the teeth of the saw, and the particles found on the second step, are the same wood. That's the saw used to cut away that step. Murder it was. We think there is a fingerprint on the saw, but it's pretty much blurred." Rogan pushed back his chair as he rose to his feet. If he could only see the connection between the two deaths! They were connected; of that he was posi- tive. But how? And above all, why? By the window he paused, then whirled suddenly around. "Oh, Fletcher was in here about ten, Harley. He is pretty well broken up. But he agrees with me. They were after him, not his wife. He says he has no idea why anyone should be after him. Can't explain the letters." "Where was he last night?" Manners asked. Rogan smiled. "Canada," he answered. "Went over for some liquor. I checked it all today. He was over at Long Point. Stayed at the Lodge there until about five this morning. It's only about a twenty- five-minute run in his speed boat." He paused, then shrugged his shoulders. "It's just as well for him he was over there. If that telephone call had not pulled him out to his death, it's my idea Tollen would have used his gun." Tollen: Manners had heard nothing more about the shoe clerk. He knew the police would put the man through a vigorous third degree; wondered what they had got out of him. Evidently not much, or Rogan would have said something. But he felt im- pelled to ask. The chief replied that the man had stuck to his POISON UNKNOWN 185 original story. He had admitted writing several anonymous letters to Fletcher, hoping to scare him away from his wife. But Rogan sadly shook his head, as he admitted that the typewriter in the man's store, upon which he said he had written the letters, could not have been the machine used to type the letters Fletcher had shown the police. As for killing Langdon, Tollen had denied ever having been on Fletcher's grounds before last night. They discussed him for a while. Rogan insisted that at least he had a motive for killing Fletcher. Reminded that Langdon had been the victim, he re- torted that the doctor had been sitting in his host's seat and might have been killed by mistake. At this Stone reminded him that a detective had been di- rectly under the window at the time the doctor died. Rogan's retort was to mention the footprint that could not be identified as Rice's. Then the commis- sioner commented: "Let's admit the man might have a motive for killing Fletcher. But we have no proof he was on the grounds the night Langdon died. In fact, if we be- lieve your detective, he could not have been. We have no reason to think he would have attempted to kill Mrs. Fletcher. Of course he is in a bad position; the fact he was hiding by the veranda will go against him. But somehow I just can't see that man using poison." » Manners agreed with him. He turned to Rogan. "You do not think anyone at that table poisoned Langdon?" The chief shook his head. "I know little about 186 POISON UNKNOWN poison. Both you and Bell said the stuff was injected into his body. No one at the table had a chance to do it. And what's more, no one outside had a chance. I can't see any sense to it, unless we think he killed himself. And you say he would never have done that." Manners shook his head. Langdon would never have committed suicide. But he had some informa- tion to give the chief. He told of Hoff's discovery; added that the poison was unknown; admitted they had no idea how it might act, though they believed that in order to kill quickly it had to reach the blood stream. The look he received was a mixture of disgust and dismay. "So now you're telling me that neither you nor Hoff know the poison that killed the doctor, or anything about it. If you don't, then why might he not have swallowed it? In that case someone at the table could have given it to him. And—" Here the door opened suddenly. They turned to see Kent. The inspector was excited, and his face was red as though he had been running. Halfway across the floor he began to talk. His words were hurried, eager: "Bringing you a guest, Chief," he grinned. "Who?" Kent smiled—a broad smile which took them all in. "Got that young man who vanished the night of Fletcher's party. When you hear the story Hardy will spill—" he paused to shake his head—"well, you're going to be surprised." CHAPTER XII Just before the police commissioner entered the of- fice, Rogan had been recalling—with an ironical smile upon his lips—a statement made by his superior. It roused no happy memories. The words had been spoken two days ago, on the occasion of the dinner given in his honor. The city had been told that no police department in the country had more scientific equipment than their own; that every aid science had invented for the detection of criminals was at their disposal. He recalled the statement again as Manners told of Hoff's remarks concerning the poison. The toxi- cologist could not name the poison that had killed Langdon. What was more, he had no idea how it had been given. Not much help in science, was Rogan's thought. He had been going on the theory that the first murder was an outside job. It ap- peared now that neither Manners nor Hoff was able to assure him that someone at the table could not have committed the crime. They were again at the point from which they had started. They knew no more than when they first saw the still figure sprawled over the table. Science! He shrugged his shoulders. Every needed bit of apparatus was in the laboratories. Ma- chines for taking pictures, for beating rugs and car- pets, for analyzing blood-stains, paper, fabric: 187 188 POISON UNKNOWN everything he needed was at his command. What good had these things done him? None. Even the few facts they had brought forth were of little value. Out of long experience he knew there were two things he must know first of all: why were the crimes committed? and were they connected? Dis- cover these two and he could make progress. It was out of such thoughts that his mind leaped excitedly towards the words which fell from Kent's lips. Something practical was coming at last. A man had talked. From the satisfied expression upon the inspector's face, he must have talked plenty. In every case there came the time when there was a break— perhaps the moment had arrived. As his eyes met Kent's he decided it had. There was no time for a question. A young man was coming into the room, unwillingly. A heavy-set detective, whose hand gripped the young man's shoulder firmly, was responsible for his advance across the floor. Nor was the detective at all gentle in his urging. A quick glance was all Manners needed to see that the youth was badly frightened. His light blond hair was stringy from perspiration, and the thin, weak lips were trembling. The eyes, which stared wildly at the sight of the police chief, were a washed-out blue. His gray suit was of extreme cut, the material a bit loud, and evidently just pressed. An effeminate type of young man, was Manners' mental summary, without any high degree of intelligence, and above all a youth who was frightened. At a gesture of command from Rogan, Kent POISON UNKNOWN 189 hastened to place a chair directly in front of the win- dows. With a nod of his head the detective took a firmer grip on the gray shoulder, as he shoved him over to the chair, and with a half-push forced him to be seated. Then with a satisfied smile on his face the officer stepped back to lean against the wall. Rogan rose slowly to his feet. So this was the young man who had climbed out of the window; who had disobeyed his order that no one should leave Fletcher's. As he walked across the floor his lips shut tight. Why had he done that? A poor sort of stick. Not much above his ears. What was he afraid of? For he was afraid. He could see the faded blue eyes open wide with terror as he approached the chair. Ought not to be much trouble getting him to talk. As he thought this his hand went slamming down on the youth's shoulder. "So you're the person who decided not to stay at Fletcher's. Suppose you tell us why you skipped." There was no reply. Twisting his shoulder out of Rogan's grip the young man slumped far down in the chair. His face had grown very white, his eyes stared wildly around the room. Came the chief's voice, rough, demanding: "You heard what I said? What's your name?" "Hardy—William Hardy," was the low reply. Rogan glared at him. "Come across, now I Tell us why you skipped out of that house. You knew I had left orders no one could leave." Again the young man's eyes searched the room. If he was looking for sympathy, he saw none in the faces of the men who watched him. His nervous POISON UNKNOWN fingers shut—opened—then closed again. At last he spoke, slowly, hesitatingly: "Why, I was afraid." It was apparent he had intended to say more, but his lips suddenly closed. The chief gave him one look, then slowly walked around the chair to come to a halt directly in front of Hardy. For a second the gray eyes narrowed. Then his arm shot out. The demanding fingers clutched the youth's shoulder, and with a pull he was jerked to his feet. Holding him at arm's length, Rogan spoke. His voice was icy, cruel, threatening. "You're going to talk, and damned quick. And you're going to tell me everything I ask. Get that? Everything." "What do you want to know?" was the stammer- ing question. Rogan's lips were a straight line. For a second the cold gray eyes bored into the faded blue ones of his victim. "You know," he growled. Violently he pushed Hardy down in the chair. "Talk!" he com- manded. Silence crept over the office. From the street there drifted the sharp blast of a whistle—evidently from the traffic officer two blocks up the street. At the sound Hardy threw a startled glance towards the window. They saw his face flush. Then in a sudden torrent the words came: "I was afraid. I had not done anything. But—" he made a helpless gesture—"you see we were sur- prised when we discovered Dr. Langdon was to be at the dinner. He did not go round with our crowd. POISON UNKNOWN 191 He high-hatted us; thought we were not good enough for him. It was Mrs. Fletcher who invited him." Manners saw Rogan's astonished eyes; knew what he was thinking. There was resentment in Hardy's voice as he named the doctor. Hardy had not given the dinner. It was not his business to show feeling over the guests. He had been but a guest him- self. Yet there had been feeling in his voice. Man- ners knew Rogan had noticed the same thing. "Will you kindly tell me," came the sarcastic ques- tion, "what business it was of yours who the Flet- chers invited to their dinner?" The young man flushed. "I don't mean that. We were surprised. Of course Mrs. Fletcher and the doctor were friends. But we were surprised he was invited. You see, Tommy Davidson was there, and he once had a run-in with Dr. Langdon. We talked about it before sitting down to the table." Rogan's gruff voice broke in on him. It was evi- dent the chief was impatient, that he thought the youth had said nothing of importance. Once again he reminded him he wanted to know why he had left the house. "I am going to tell you," was the quick retort. "Tommy Davidson asked the doctor, when they were in the library, 'what in hell he was doing at the dinner?' The doctor told him his invitation came from a member of the Fletcher family who, if she had her way, would not have invited the rest of us. And then when the doctor left the room Davidson put a proposition up to me." i92 POISON UNKNOWN As he paused Manners heard the commissioner shift uneasily in his chair. Something was coming. Another name had been mentioned; and they had learned that all had not been well at the dinner. Rogan broke the silence: "What proposition?" Hardy's face went white. He started to speak, only to hesitate and throw a pleading glance at the chief. The sight of the red, scowling face made him find his tongue. "Why, Davidson said we ought to play a joke on the doctor—get even with him. So he gave me five little pills. Said that during the dinner, if the chance came, either he or I would drop one in Langdon's wine or food. Told me they would make him feel pretty bad, as if he were seasick. Said it would be a good joke on the doctor—disgrace him before us all." As the shrill voice died away, the room grew very still. All were thinking the same thought. What Hardy had just said seemed incredible. Yet Man- ners knew it was just the sort of thing that would appeal to Davidson. Could it be that the pills had contained the fatal poison? One look at Rogan's tense, set features, and he realized his thought was the same. "Five pills—" came the slow voice of the chief. "And did you drop any of them in the doctor's food or drink?" Half-rising from his chair, Hardy screamed out that he had not; and his voice was hysterical in its piercing tones. Davidson had given him the pills. POISON UNKNOWN 193 Tiny things they were, not much larger than a bead. But he had not sat near the doctor. There had been no opportunity of doing what had been suggested. Again and again he wildly protested that the tablets had remained in his pocket during the meal. There came the voice of Stone-low, cold, ear- nest: “And where are those pills now?”. "I threw them away," was the half-whispered ad- mission. “And why did you leave the house when everyone had been asked to remain ?" Hardy gave a shudder. “Because because when not to leave the house, I was afraid. I remembered I had those things in my pocket. I was afraid that,” With a leap Rogan was by the chair. His hand roughly jerked the young man upright. His voice was cold and even: “And you were afraid you might be suspected of poisoning him!” "No! No!" was the shrill protest. It was halted by Rogan whirling him about. As the chief released his grip Hardy fell into the chair. Again he spoke: "I knew I had done nothing wrong. But I was afraid. I wondered if Davidson had dropped some of them into something Dr. Langdon had eaten or drunk. Wondered if he'd made a mistake-if the stuff instead of making him ill had killed him. So I got out of the window, and just rushed away.” For a moment Rogan glared down at the shrink- ing figure. Then to Manners' surprise, turning to the plain-clothes man, he gestured toward the chair. "Take him down below and lock him up. Give him 194 POISON UNKNOWN a good dark cell—one in which he can do some thinking. I will see him later." Protesting wildly, Hardy was shoved out of the room. As the door shut Rogan turned to Kent. "Is that what he told you?" Kent assured him it was the same story; then went on to tell where they had found Hardy: in his own apartment—and he surprised them by adding that Hardy had admitted sleeping in Fletcher's boat- house on the night of the murder. At this, Rogan broke into a question—only to be answered by the inspector's next words. He stated that Hardy main- tained he had spent only one night in the boat-house. He believed this, for he had checked the statement: at the apartment house the elevator man had taken him to his room the morning after the doctor died, and had not seen him leave the building since. Leaning against the wall, Rogan listened. His face was grim and expressionless. The story he had just heard seemed improbable. But the young man had climbed out of the window, and there must have been a reason for his action. He had been afraid, he said. Five pills . . . Perhaps they were the poison. If the story were true, then Davidson could have dropped one in the doctor's food. If so, it might ex- plain the crime. Anyway, one fact had come to light: there had been discord and hatred at that dinner. They would soon know what had caused it. He turned to shout across the room: "Kent! Get out of here and hunt up Davidson. Bring him down to the station. Don't let him have any idea why we want him. If he refuses to come POISON UNKNOWN grab him by the neck and drag him down. We will see what he has to say." Crossing the floor he dropped down in his chair as the inspector left the room. A stogie was taken from a box in the first drawer, and carefully lighted. Behind the smoke he stole a glance at the two men sitting a few feet away; observed Manners' face was very grave, his lips set in a tight line; noticed the commissioner was gazing at the ceiling, his brow knit as if thinking. He asked a question. It was Manners who replied. He declared he be- lieved Hardy had told the truth. How much truth he had told was of course another question. Without a doubt Davidson had given him something to put in Langdon's food. Hardy claimed he had had no op- portunity to do this. Yet it was evident that when he knew Langdon was dead, and heard the police or- der for all to remain in the house, his conscience had made him flee. As for Davidson—Manners shrugged his shoulders. There came Stone's low, questioning voice. "Do you think Davidson would do a trick like that?" Manners retorted he thought he would. He did not know the man socially, but had heard stories about him. A thoughtless, selfish man he was re- puted to be; one whose unbalanced emotional nature would nurse a grudge; a man perfectly willing to injure anyone if he could escape the consequences of his action. But as for his committing a murder— Manners paused to light a cigarette. "It's like this, Stone: as I see it, Hardy told the truth; Davidson did give him something. But what 196 POISON UNKNOWN Rogan must decide is a very tricky question: did Davidson intend to kill Langdon? If so, then I might as well say now that it seems very doubtful to me that what killed the doctor was anything David- son dropped in his food. If Hoff is right it could not have been." Rogan made a violent gesture of disgust. "Oh, hell! You, Bell and Hoff make me tired. First you say the poison that killed Langdon was not swal- lowed. Next you say you don't know what the poison was. Then you insist that though you don't know what it was yet it must have been injected into the blood stream. I can't see how you can say that when you tell us Hoff has no idea what the poison is. You may be right—maybe those pills could not have killed him. But fatal or not, I am going to find out what they were." There was little to be said in reply. Rogan was right. Until they were certain about the poison there was no use in being dogmatic as to how it had been given. Yet it seemed absurd to think that Davidson could have procured a poison that was unknown to Hoff. The toxicologist had been very positive that whatever killed Langdon had been injected directly into the blood stream. Until Hoff changed his mind he, Manners, would keep his own blank. A suggestion came to Manners. It occurred to him he knew one person who might be able to explain the feeling against Langdon. As the thought came to him, he scowled for a second: the feeling against the doctor must have existed long before the dinner. If Davidson had given Hardy five tablets he had POISON UNKNOWN 197 come to Fletcher's with them in his pocket. The plot had been thought out before entering the house. Thinking this, he rose to his feet, and despite Rogan's insistence that he remain, said good-by and hastened out to his waiting car. The dog, who had been stretched at full length upon the seat, sleepily sat upright as his master climbed into the machine. But though he inserted the key in the switch Manners did not at once turn on the ignition. For a moment his eyes searched the sky, blue and cloudless; next he glanced at the white sur- face of the new police-station. Then he sat motion- less, thinking over the story he had just heard. If Hardy had told the truth—and he thought he had—Rogan was at this moment a much perplexed man. His idea that the anonymous letters were be- hind the crime would have to be given up. His theory that the doctor had been killed by mistake would no longer be tenable. If Davidson's pills turned out to be poison, then Langdon's death had been a deliberate crime: no mistake at all. Manners went no further than this. A little scowl was upon his face as he turned on the switch. When the engine spoke he slowly shook his head. If only it were possible to turn a switch in one's memory, make that something back in his subconscious spring into being! But as he drove away from the curb he had one assurance. Sooner or later the unexpected fact would flash before him. Until it did there was no use in trying to force his memory. The apartment house he stopped before faced a small park. There were children playing upojfc the POISON UNKNOWN He made some reply, then sank down on a sofa. As he did so a telephone rang, and she excused her- self. His eyes took in the room. Too much furniture, he thought, though it was all costly. Periods were a bit mingled, and the draperies were a mixture of red and black. Plenty of books: late novels mostly, sexy, exotic novels; for he could read the titles of those that stood on the small table beside the sofa. It was a room that expressed the restless spirit of the woman: no peace or rest anywhere. She returned, to seat herself in a low chair only a few feet from the sofa. Her dark eyes studied him. As their glances met, he spoke: "It's a long time since we talked, Mary." She shrugged her shoulders, inserting a fresh cigarette into the ebony holder. Not until it was lighted did she retort—and he thought her voice was curiously mild. "It is, Harley, and I have lived here a long time. Since we were children you have become a world famous expert, while I—" She paused, then waved her hand toward the window. Suddenly she bent forward. "Harley, what fate is pursuing the Flet- chers? When I think of Ann—" her voice hesitated for a second. "Poor Ann. The best of us all." He shook his head. "I don't know, Mary. We are trying to find out. What I want to know about is the dinner." Leaning back in her chair she threw him a long, calculating look. She was nervous. The hand holding the cigarette trembled as the holder was lifted to her lips. The rouge hid the whiteness of her cheeks. POISON UNKNOWN He decided she had not slept for some time. The slow shake of her head stopped further analysis. "I don't know, Harley, that there was anything wrong about the dinner. Perhaps we were surprised a little by the doctor's being there." "Why?" "Maybe not surprised—" she countered. "For he was a special friend of Ann's. But he never mixed in our crowd. We were not his type." A hard edge came into her voice. "We drank too much, smoked too much, knew too little for him. Ann he adored. But us—" she shrugged her shoulders. "Did anyone quarrel with him that night?" He received a long, thoughtful glance. "I don't really know. Tommy Davidson raved a bit about Langdon's spoiling the whole evening. That was be- fore the doctor came. But Tommy's an ugly beast with his tongue. No one thinks much of what he says." She knew nothing. There was no doubt in Man- ners' mind about her frankness. He made a sudden decision: decided to take her into his confidence. Some little act she had observed during the dinner might have slipped her mind. "I am going to tell you a secret, Mary—some- thing known only to the police." There was a little sarcasm in her retort: "You honor me." He repeated the story told by Hardy in the police- station, watching her face as he talked. Save for a slight inclination of one eyebrow there was no change of expression. She seemed neither surprised POISON UNKNOWN nor shocked. When he ended she rose slowly to her feet. "Billy Hardy, of course, is not of very much ac- count. But I can assure you of this, Harley: it would have been very difficult for anyone at that table to put a tablet in the food or wine served the doctor— that is, anyone but the servants. Mrs. Davidson sat next to the doctor; Davidson himself had no chance to do it. No doubt Billy told the truth. I cannot see how it could have been done. Excuse me a moment." While she was absent he decided she had nothing of value to tell him. Davidson had shown some feel- ing over the presence of the doctor at the dinner. It was like the man to have done this. But if Mary Moorhead had not seen anything amiss during the meal, it was difficult to think anything had been so. Her eyes were keen; little escaped her notice. She was coming back into the room. In her hands was a tray, with three bottles and two tall glasses. As she walked across the floor he heard the pleasant tinkle of ice in the glasses. Placing the tray upon the table her hand reached out for a bottle. "Scotch, I suppose, Harley? Tell me when." Taking the drink from her hand he watched her fill her own glass. The yellow liquid poured for her- self was twice the quantity in his glass. Nor did she use any soda. Not until the glasses were placed on the tray did she speak. "It's going to be hard for John Fletcher," she said quietly. "It was Ann who gave him his social standing. By himself he had none at all. He is going to miss her. It will make a good deal of difference POISON UNKNOWN in his life. He is rather broken up." He made some casual remark. Somehow, he did not feel like discussing Ann Fletcher. Yet she must have liked Mary Moorhead. Despite her nervous, sketchy way of speaking, her vicious remarks about those she knew, there was something likable about the woman sitting across from him. As he thought this she spoke again. "Of course some time Ann would have been forced to divorce him." He was startled into speech: "She would?" Gravely nodding, she continued: "It was certain to come some time. Ann could not have stood for- ever John's cheap loves. Sooner or later she would have divorced him." He made no reply. There seemed nothing to say. The woman opposite him was also thoughtful. The ebony holder had been replaced on an ash-tray. Her hand reached forth for the bottle, and at her ques- tioning look he shook his head. He watched her pour herself another drink. Before lifting the glass to her lips she turned to him: "John never knew what he had in Ann. Of course she had more money than he did. I suppose it comes to him now; she had no relatives. But money means little. What he will miss is the social background she gave him. Without her he will have none. Ann was a rather fine person." After this the conversation died away. Something had caused the nervous, tense lines to vanish from Mary Moorhead's tired face. It could be the Scotch, he thought; it might also be memories within her POISON UNKNOWN 203 mind. As he stood at the door to say good-by she suddenly threw back her head; her hand touched his. "Come and see me some time, Harley. I am not very happy." He drove slowly home. The call had been of little value. That is, he had received scarcely any new in- formation about Fletcher's dinner. But he was glad he had called. He would have to see more of Mary Moorhead in the future. His psychological knowl- edge might enable him to do a great deal for her. Something ought to be done, and that quickly. His garage was some distance from the house. Be- cause the sun was beating down upon the driveway he drove up on the grass, to park the machine in the shadow of the stone building. The dog leaped from the seat as soon as the car stopped, and was soon running in wild circles over the grass. As he stepped within the house the telephone rang. He had only to reach out his hand to lift the receiver. It was Hoff's voice that came over the wire. It was always an eager voice; now he heard a touch of anger in the tone: "Harley, I am still working on that poison. Not much better off than when I last talked to you." As he paused, Manners asked a question: "Do you think the poison could have been put into Lang- don's food, Hoff, or in anything he had to drink?" The reply was forceful in its certainty: "I do not. I know, now, where it entered his body. It was not swallowed. It went into his blood. It entered a little above his collar." "His what?" POISON UNKNOWN "His collar—collar! What you wear round your neck. I don't know how they got it into him; but they did. In the back of his neck, just above his collar, I found the little mark on his body—" The voice hesi- tated a second, then went on. "Well, I've discovered for you where the poison entered his body. Now it's up to you to find out how it was injected." With that he rang off. POISON UNKNOWN face. Standing across from Rogan's chair he had profanely threatened the police chief with every evil he could think of: words that only caused Rogan's lips to become firmer, and his voice a little harsher. Davidson: what was he going to do with him? He had admitted all that Hardy had stated; he had laughed at the idea that the pills he had suggested should be placed in Langdon's food contained poi- son. Rogan recalled what he had said the tablets contained: something very harmless—apomorphine —which would only have made the doctor tempora- rily ill. But when he asked Davidson to produce them he had been told they were no longer in existence. The man had destroyed them. He could give no reason, either for what he had intended to do at the dinner, or for the destruction of the pills. He had simply repeated, sullenly, that he threw the tablets away before he knew that Lang- don had died from poison. Where he had thrown them he could not say—somewhere along the high- way as he drove home from Fletcher's. But just where he did not know. It had been dark, and he had paid no attention. The whole incident looked suspicious to Rogan. The first murder had been committed with poison. Davidson had tried to put something in the doctor's food, then had thrown away the tablets. Why? If only he could answer the question! Against his better judgment the commissioner had persuaded him to allow Davidson to go home. He had been told that he had nothing upon which to throw him into a cell: that Davidson's lawyer would only have him out POISON UNKNOWN still in the dark as to both motive and murderer? As he thought this over he admitted one thing: so far they had not discovered the slightest hint of a motive for either one of the deaths—that is, unless jealousy and hatred Davidson had borne Langdon were a motive. But if it were, it could have no con- nection with Ann Fletcher's death. He had thought all along that both deaths had been accidental. That is, although murder had been committed, he had persisted in thinking that the wrong persons had been the victims. He still thought so—though for what reason he could not tell. That telephone call had been for Fletcher. If he had been home his foot would have stepped upon the broken board. It was just an accident that his wife answered the call and went out of the house. As he applied a match to his pipe, he maintained his point stoutly to himself. He still believed the woman's death was a mistake. But how about the doctor? He wavered a little when he thought of him. At first it had been his idea that Fletcher had been the intended victim. Suppose Davidson had not told all the truth: suppose his pills had contained poison: suppose they had been dropped in the food. Then it would be a deliberate crime. But as he thought of Davidson he became a bit uneasy. The man was a blustering bit of egotism. He doubted whether he would have courage to poi- son a man when eight persons were sitting around a table. He looked again at the clock. Ten now. He had promised Manners to run up to his house. The POISON UNKNOWN 211 sank down in the chair. Nor did he refuse the drink that was handed to him a moment later. As he took his first sip of the smoky-flavored liquor his eyes re- turned to the dog. The animal was lying between the chairs of the two men. But his head was held upright; and his eyes appeared to be fixed on the bay windows. There was an odd gleam in his eyes, one that made the chief grateful that the animal knew him. As he looked he saw the skin go snarling back from the long, white teeth, as there came a vicious growl from the ani- mal's throat. There was a command from Manners. "I don't know what's got into Satan tonight," he said. "He has been acting like that for the last hour. Every little while he throws back his head and growls. It's not like him." Rogan made some comment. He liked dogs, knew that the huge animal at his feet was perhaps the most intelligent one he had ever known. But he had al- ways felt a little distrust of his friend's Airedale. It might have been his size, half-again as large as the ordinary breed; or perhaps it was the fact that the dog barely deigned to notice him. If ever there was a one-man dog it was Harley Manners' Satan. The chief took another sip of his drink. It must be true, that remark attributed to Manners' father: "When I pass out, my son will at least be able to drink good Scotch all his life." There must have been a great deal of it. . . . His attention returned to the dog. That animal is nervous, was his thought. Harley has often said the brute has no nerves. Some- 212 POISON UNKNOWN thing bothers him now. If his master had not told him to be still he would be growling his head off. Perhaps he sees a ghost. The last idea made Rogan drain the glass, and then pour two more fingers from the bottle. Manners' voice stole in on his thoughts: "Rogan, I want to tell you that Hoff says he now knows how and where the poison entered Langdon's body." The glass was hastily placed on the desk. "He does! Why didn't you let me know before?" Manners said that he had thought it might be best to keep the information back for a while. There was really little of importance, save that their theory as to how the doctor had been killed seemed to have been corroborated. "It entered his body just above the collar he wore—at the back of his head." Doubtful was the look that was thrown at him. For a moment the chief did not speak. Instead his hand reached for the glass, and he took two small sips of the liquor. Then carefully placing the glass back in the very spot from which it had been lifted, he slowly shook his head. \ "That may all be so, Harley. But tell me this. You still have no idea what the poison was. How, then, can you be so certain where it entered his body?" With a touch of impatience in his voice Manners reminded him that Hoff was one of the great toxi- cologists of the country. If he said the poison had en- tered Langdon's body at a particular spot it might be better to agree with him. The irony did not bother Rogan, though a thought that came to him did. POISON UNKNOWN 213 "Harley," he said, "the doctor was sitting directly in the center of that middle window." "Yes, Rogan, and that window—it so happens— was open." Instead of a reply there came a sharp glance from the cold gray eyes. Rogan's big hand reached up to run heavy fingers through his snow-white hair. Then he reached for his glass and drained the drink in a gulp. "It was. I had forgotten all about that. But what's funny about having a window open on a warm night? It would have been odd if it had been closed." "But what I mean," Manners explained carefully, "is this. Those windows swing open; you do not have to lift them up, and the screens swing with the win- dows. Now that window directly behind Langdon was swung back. See what I mean? The others were raised to admit the air. But the center window was swung back, and the screen was swung back with it— yet it was a warm night, with all sorts of insects out- side." Rogan saw what he meant. A very disagreeable idea had entered his mind. He was not at all startled when Manners put it into words. "You see, Rogan, it looks very much as if the poi- son came from outside the house." He had to make some protest. "How could it?" he asked. Manners had a qualm of conscience. It would be the first time Rogan had heard a mention of the crushed glass he had found behind Langdon's chair. That any evidence had been kept from the knowl- 2i4 POISON UNKNOWN edge of the police would not be to the chiePs liking. But—he might as well divulge it at once: very briefly he told of the incident, only to see the round face grow a little red. What the flush might portend he did not discover; for to his surprise there was no immediate retort. Continuing, therefore, he said: "What I think, Rogan, is this. The poison was in a glass capsule and was shot through the window." Rogan gave a start. It might be so. They used tear gas in pistols now: tiny glass capsules filled with gas. It would be just as easy to use poison. All that one would need was a sharp point on the glass receptacle, which would break after entering the skin. But he remembered that under the window there had been one of his own detectives. No one would have been able to come close enough to that window to use a gun. Vehemently he expressed this thought. "I know, Rogan; that's the difficulty," was the comment. "And of course we are not certain the glass capsule that contained the poison came through the window. All we have accomplished is one more step in this affair. Logically we are now certain how the poison entered his body. But it could have been given inside the house." "How?" "Suppose Hardy or Davidson did not tell the truth. Suppose one of those tablets was introduced into the doctor's food. Suppose that instead of mak- ing him ill it caused him to faint. There would be confusion when his head fell on the table. Someone must have lifted it back to look at his face. It would ■ POISON UNKNOWN 215 have been possible, under cover of aiding him, to use the poison, then drop the capsule on the floor. I say 'possible'—I am not saying that is the way it was done." Rogan threw a long, thoughtful glance at the squatty bottle. It was good Scotch, and he could stand another drink. It had been a hard day, and his mind was in a whirl. But perhaps he'd better not take any more. He shrugged his shoulders—and reached out for the bottle. As he poured an inch of the yellow liquor into the glass he remembered he had not told Manners of his interview with Davidson. Placing the bottle back on the desk, he swept into the story. When he had finished his friend made no reply. In fact, Manners was hearing only part of the words that fell from Rogan's lips. He had told the chief it might have been possible for someone within the room to poison the doctor. He suddenly realized that though it might have been possible he did not in the least believe it was the explanation. That poison had come from outside the house. A glass capsule had been shot from a gun. Again he was caught up in his theory, however: a difficulty was immediately presented: for there had been a detective under that window. He had seen no one, swore no one had been on the grounds. How then could the poison have been shot into the room? Rogan's voice interrupted his thoughts. In a plain- tive tone, mingled with perplexity and weariness, he wanted to know if Manners thought Langdon had been mistaken for Fletcher. The chief reminded him that if anyone had looked through the window all 218 POISON UNKNOWN took me back home.” Manners rose, to smile at the weary man before would take him back at once. But before starting for the hall he felt compelled to speak again. “What I really mean is this. There are no new we been doing? First we become excited over anony- mous letters; then we talk about people being killed by mistake; next we allow Davidson's attempted joke to throw us off. I am going to go back to the very be- ginning and start again. I shall look for just two things: the psychological type that would commit such murders, and the possible motive.” Rogan followed him out into the hall, though he said nothing until they had opened the door. The dog was the first one to leave the house, vanishing with a loud defiant bark. As they reached the grass the chief made his protest. "After all, Harley, I had a right to talk about those letters. Fletcher did ask me to send two men to his house. His wife was afraid, you know. Good thing I did. And that reminds me. He is scared him- self now. Asked me tonight to guard his place for a few days. What do you think of that? Don't blame him, though, for feeling a bit uneasy." Evidently Manners thought nothing of it-he made no reply. They were going down the gravel walk. Ahead was the dim shadow of the garage, but they had to walk round to the other side to find the car. It lay close to the stone building, just where Manners had left it early in the afternoon. Silently thing I did, His wife ud ask me POISON UNKNOWN 219 they climbed in, and he turned on the lights. He did not throw in the clutch until the engine had been running for several minutes. In fact Rogan thought he would never start. When he did, he ap- peared to be still a little absent-minded. For he started towards the road at a much faster rate than was his custom. And—just before reaching the open- It was a stupid rabbit. Dazed, evidently, by the bright glare of the headlights it stopped directly in front of them. If he wished to avoid hitting the frightened animal there was but one thing to do. Turn to his left he could not, for he would have ruined a long row of rose bushes. He gave the wheel a violent jerk to the right. For a second the car started to turn. Then there came a little shudder, followed by a horrible crash- ing sound, and with a sickening plunge the machine went down on its side. So sudden was the accident that Rogan went smashing up against the wind- shield. Only the fact that it was unbreakable glass saved him from a nasty cut. As for Manners, when the car crashed he slid far down in the seat. They were out of the machine in a second. And Manners' first action was to reach down and turn off the engine. Then he walked around the car and, standing beside Rogan, looked at his broken wheel. From what he could make out in the darkness the right front wheel was entirely off the machine. There was a flash-light in the pocket of the car, the article he slid back the catch. A long ray of llame 220 POISON UNKNOWN broke the darkness. He played it over the front of the machine. Yes, the wheel had come entirely off, and was lying half under the car. As he noticed this Rogan spoke: “It's a darned good thing it came off here, Harley, instead of on those curves on the hill. But why the devil don't you make sure your machine is in good order ?” Silence for a moment. Then out of the dark- ness came Manners' voice-curiously grave, Rogan thought, and yet with an undercurrent of excitement. “Rogan, that car came back from the garage three days ago. And those wheels—there are only five of these machines in the city—the wheels have an odd locking arrangement. Once they are on, you cannot unlock them to take them off the axle, without a special tool. No ordinary wrench will do the trick. That wheel was tampered with. I thank our stars for that rabbit!” There leaped into Rogan's mind a vision of the long, steep hill they would have been going down by now: a hill two miles long, with wide, sweeping curves, and deep ditches on either side of the road. Manners always drove at around fifty miles an hour (more than once as they had swept round curves Rogan had wished the speed less), and if that wheel had come off on the hill . . . As though reading his thoughts, Manners spoke: "If it had not been for the rabbit the wheel would not have had a violent wrench until I started round that wide curve a half-mile down the hill. We should have been going about fifty then. It's that right-hand 226 POISON UNKNOWN would fit the murders. Instead of sitting up and whipping his theory into shape, he had gone to sleep. Rest was what he had needed, and in the morning he had expected to hurry through breakfast, then rush to the police-station and consult the chief. But when he rose from the table and went back to his library he knew it would be some hours before he would be willing to put into words the suspicion that was taking shape in his mind. He would sit down by his desk, smoke a long pipe, and indulge in a little sober thinking. That over, he would run into the city. For there was work to be done there. Slowly patting the tobacco into the worn bowl he looked regretfully at the table standing close to the window. The typewriter was there, flanked by a stack of manuscript. On the floor, piled in much dis- order, were the books that he had been consulting only a few days ago. Through the open windows came the warm sunlight, and he could hear the birds singing upon the lawn. As he applied the match he knew that he had much rather be working at the typewriter. Settling down, however, to his thoughts he dwelt for a moment on the accident to his own car. It had been a deliberate attempt to take his life. That wheel could not have come off by itself. What was more, someone had had to have a special tool in order to tamper with the bolts. If he had not swung sharply to escape the frightened rabbit the wheel would have come off on the hill. That would have meant— death, no doubt. There had been two attempts upon his life. The POISON UNKNOWN 227 first was not difficult to explain. Without a doubt he had struck his match to look within the boat-house just after the murderer of Ann Fletcher had re- turned the saw. The person might not even have known who he was. But knowing the woman was on her way to the shore, that there was danger to his plans, the necessity of getting him out of the way became paramount, and the criminal had simply thrust him into the boat slip. But the tampering with the wheel of his car was another matter. The criminal had known positively, in the latter case, who he was—not only known him, but feared him. Why should the murderer be afraid of him? What knowledge did he possess that the man did not wish known ? For he had reached, within his own mind, the conclusion that a man was back of both crimes. He stopped thinking about the car, to debate whether the theory that had come to him at mid- night would appear sane in the light of day. It was just a theory—based wholly upon one remark which he had heard. But this remark had been glaringly inconsistent with the facts known to both Rogan and himself. From it he had built up a theory of the crime: one which at first sight appeared absurd, but which when coldly examined presented the only sane solution of the murders. Manners had once remarked to the chief that the most difficult of all crimes to solve was the simple one. The odd, bizarre, exotic crime, by its very odd- ity, soon brought a solution. Proceeding on the the- ory that the killing of both Langdon and Ann Flet- POISON UNKNOWN 229 He drew up in front of the tallest office building in the city. It had not been his original intention to make this stop. But as he neared the building it had occurred to him that he wished once again to visit Fletcher's estate. The man had an office in the build- ing, and it would be only courtesy to ask him if he had any objections. So he parked the car and entered the lobby. Fletcher's office was on the top floor of the build- ing. It occupied the tower: two rooms, which Man- ners doubted were used often. The door bore the name "Fletcher Estate," and after knocking he opened it to walk into a small office. Behind a desk, reading the morning paper and chewing gum as rap- idly as was humanly possible sat the blondest blond he had ever seen: one whose weak blue eyes gave him a surprised stare as he entered. To his question she replied that Mr. Fletcher was not in, nor did she have any idea when he would be. It appeared she was not overworked, nor did she seem to know much about the movements of her em- ployer. If she did not know, neither did she appear to care greatly. Her blue eyes had dropped down to the paper. Thanking her, he started for the door— then suddenly paused, as a thought came to him. "Have you any objection to my writing a note to Mr. Fletcher and leaving it on his desk?" he in- quired. She gave a languid shake of her blonde head, mo- tioning rather aimlessly to a half-open door at the other side of the room. Crossing the floor he entered a second office. It was a place of many windows, POISON UNKNOWN commanding a view of the entire city. A large desk was in the center of the floor, its surface clean, spot- less. A typewriter stood upon a stand, close to a water bottle. He had to open a drawer to find the paper for his note. Discovering what he sought he took a pen from his pocket—then changed his mind. The type- writer might be better. Pulling a chair up to the ma- chine he inserted a piece of paper and began to write. The action seemed hard after his own machine, and he had to use several sheets of paper before the note suited him. When it was completed to his satisfac- tion he walked to the desk, then going out into the other room thanked the secretary and departed. A few moments later he was again in his car. His next stop was at a big garage and salesroom, where the proprietor was glad to see him, in spite of the fact that he knew it would be impossible to sell him a car, since he had already done that only a few weeks ago. Here Manners was able to obtain an answer to his question: how many machines were there in the city of the make of his blue roadster? Five, he was told, and was given the names of the owners. Asking that a man be sent to his house at once to repair his car, Manners walked out into the street. He did not start his coupe for a moment. A little perplexed line was between his eyebrows. He had been given five names. They were all those of well- known residents of the city, people of means; for the car was a costly one. It would be absurd on the face of it to think any one of those five had had any- POISON UNKNOWN thing to do with the accident. Yet the key that had unlocked the bolts on his machine had come from the tool-box of one of those cars. It was ten minutes later that he came to a stop be- fore the apartment house in which Mary Moorhead lived. As he went up the steps he pictured her sur- prise when she opened the door and saw him again standing in the hallway—two calls in twenty-four hours, and yesterday the first time in years he had entered her house. But he had to see her again. She alone could tell him what he was seeking. He pressed the door bell, wondering, as he waited for a response, whether she would be up. It was only a little after ten, very early for a call. But even as he wondered there came the sound of a hand fum- bling on the knob. A second later the door was pulled back. Standing in the opening, clad in a black and gold neglige, Mary Moorhead looked with aston- ished eyes upon her visitor. "So soon!" she said with a little shake of her head, then stood aside for him to enter. He apologized for the early call. With a slight smile she waved him to a sofa, taking the same chair in which she had sat the previous afternoon. The thin face appeared more rested, nor had she put on much make-up. With her eyes gravely fixed upon his face she reached to a little stand for a cigarette. He decided to waste no time. "I presume you have a good picture of Ann Flet- cher?" As she simply nodded, he continued: "Would you let me have it for a few days?" 232 POISON UNKNOWN For a moment there was no reply. Gravely the woman studied him, her eyes searching his face. At last she spoke, the voice very low, questioning: "It's an odd request, Harley." He made a gesture. "It is, Mary. But I suppose you want her murderer brought to justice." The cigarette was flung down on a tray. Into the woman's cheek crept a spot of color. Throwing back her head she set the rather thin lips grimly. "More than anything else in the world." He considered her for a moment. Slowly rising to his feet he walked round to her chair and stood look- ing down at the black and gold robe. "Mary, I cannot tell you why I want that picture. But I need it; and it may aid materially in the dis- covery of the criminal. I can assure you Ann Flet- cher's death was a cruel, heartless act." He might have said more. But she rose to her feet and without a word hurried from the room. He could hear the sound of drawers being opened, of objects thrown either on a chair or on the floor. Then the noise died away and she was back at his side. In her hand was a photograph, which she handed to him without speaking. It was a beautiful picture: a full-face photograph of Mrs. Fletcher. He studied it for a time: a fine face, with sensitive lips, clear, honest eyes; perhaps not an extremely beautiful woman, but an intelligent one, a woman with warm sympathies and keen under- standing. Deeply moved he walked to the sofa. "Mary," he began, "I was wondering last night —is there any little thing, any happening at that din- POISON UNKNOWN 233 ner that you think was important—some little act that you overlooked at the time?" She shook her head; so he tried something else. "Do you know the exact time the doctor died?" "It must have been about nine," came the slow response. "Somebody mentioned the fight. It was on the air at nine. Mr. Fletcher got up and went into the other room to fool with the radio. I know it was some moments before the fight announcer came on. And it was after that that the doctor gave his little cry, and a bit later—as I thought then—fainted." "Did anyone have much to drink during the din- ner?" She smiled. "No, Harley. A cocktail and some white wine were served during the dinner. No one was feeling the little amount we had to drink." "And no one left the table?" There was no doubt that the question puzzled her. "No," she insisted. "Mr. Fletcher went into the other room. He suggested that the doctor might like to talk to Clara Underwood. But no one else even moved." He excused himself after that. As the woman said good-by he could tell from the expression upon her face that she was curious about his visit. He gave another glance at the picture as he went down the steps. It was a beautiful photograph, worthy of the woman whom it limned. It was his hope that it would prove to be what he needed. The next stop was on the outskirts of the college campus. Hidden under a mass of red roses was a small, white studio. Roses were everywhere, climb- POISON UNKNOWN ing even over the slanted roof of the little building. They hid the windows, covered the wire fence that set off the small plot of ground in which the cottage stood. And here he did not have to knock—for the door was open. The room he entered was the only one in the building. Pictures, masks, terra-cotta statues were everywhere. At the further end was a large bench, in a very much cluttered condition, before which sat a man. The latter turned, to throw a glance toward the door, as Manners entered, and after one swift glance of recognition started across the floor on a half-run. Henri Maurras had come to the city shortly after the war. In the last five years the masks that he had made for various theaters and museums had won for him a world-wide reputation. Out of his knowledge of the ritualistic and religious masks of the ancients he had created all the shades of comedy, tragedy and burlesque. Maurras had recaptured an old and prim- itive art, and because he had great imagination and ability had become famous. He was a slight little Frenchman, given to strong likes and dislikes. Of all the professors at the Uni- versity Manners was his closest friend, and they had spent many hours together, both in his little studio and in the big library of Manners' house. Maurras' face was slender, with tense, nervous lines about the lips. But the mop of white hair made him look like a gnome. "Well, Harley," he beamed. "You have not been in for one, two weeks. Come, let me show you what POISON UNKNOWN I am making for the Metropolitan. It's beautiful." His hand urged his friend over towards the bench. "Henri," came the quick admission, "I shall have to see your work another time. I am in a terrific hurry. I want to ask a favor of you. Can you make me a mask from this picture? Can you have it ready this evening?" Ann Fletcher's likeness was placed in the artist's hand. His sharp eyes studied the face, while his lips twisted a little. Then he raised his head, and the sharp eyes looked into Manners'. "Fine face, Harley. But you don't make masks in a few hours. You work days: work to catch all the impression of beauty, terror and awe. You ask of me the impossible." "I know, Henri. But what I want is a mask that will bear a close resemblance to that face: one which if seen some distance away, say in a faint light, might be taken for that woman. Could you not make me that at once? It's rather necessary." The artist's glance dropped to the picture in his hand. It was held at arm's length for a time, in first one position and then another. At last he spoke: "A good mask should always be made of wood, Harley," he said regretfully. "The most beautiful and realistic of them are carved from wood. To do a piece of work of which you will be proud takes many days, many weeks. Now of course I can use paper, glued in layers, and covered with varnish and paint. Only, for the varnish to dry properly it takes time—and—" He paused, then threw out his arms. "All right, I will do it for you." 236 POISON UNKNOWN Grateful, Manners told Maurras that if the mask could be ready by eight o'clock it would be a great favor; and, refusing the artist's invitation to re- main, hurried from the studio. The police-station was to be the next stop; and he was hoping to find Rogan in. As he drove through the crowded streets he was considering his morning. Four calls he had made; and they had brought little result. Yet if the theory playing through his mind were correct, all the calls had been necessary. He did not go directly to Rogan's office upon en- tering the police-station. Instead he walked down a long hall, to pass through the door which bore the words "Homicide Squad." Behind a desk, coat off, a corncob pipe in his mouth, sat Kent. The long face was solemn and there were deep circles beneath the eyes. It was evident he had not had much sleep the last few nights. He waved his visitor to a chair, but as Manners intended to remain only a few moments he walked to the desk instead. "Know anything new?" he queried. There came a half-grin. "We got a nut locked up, who tried to tell us he committed the murders. But he knows no more about them than I do. And that's darned little." Kent's eyes strayed down to the desk, and he picked up a sheet of paper. "This will interest you. We found out what Davidson's pills were—apomor- phine, one-fifth of a grain. He got them off his doc- tor. The doc checks us on that. And Bell says they would make a man sick as a dog. So that part of Davidson's story seems to fit." 238 POISON UNKNOWN slammed down on the desk as he watched Manners enter. For a second he sat motionless watching his friend cross the floor, then twisted uneasily in his chair. If the growl he barked out was intended for a welcome, it sounded far more like a defiant protest. Manners chuckled at the greeting. The chief was edgy. No doubt he had just got to bed when the sailor's confession brought him back to the station. There had been little sleep for Rogan the past few nights—little sleep and a deal of worry. So far the papers had been rather mild in their comments; but they would soon become rabid. Always they followed public opinion, and it would take very little to turn the city against the police. It had happened in the past, it would happen again. "You're going to take a ride with me," Manners said pleasantly. Vigorous and ironic was the retort. Rogan was going to take a ride with no one. He remarked, with heavy sarcasm, that if he did ride with anyone it would be with somebody whose car had its wheels se- curely fastened. Ride, he snorted, he would not. Be- sides, there was work to do, and a lot of it. Rather profanely he queried further—did Manners think he had nothing to do but ride round the city? Until the rage was spent Manners listened. Then he said calmly: "I'm going out to Fletcher's. I think you'd best go with me, Rogan." The chief's big hand went searching through the papers on the desk. Documents were tossed to one side, picked up and tossed down again. At last he POISON UNKNOWN found what he was seeking, and with the words— "Read that!"—handed a paper to Manners. It was a small four-page sheet, printed on poor paper, from type that was badly worn. Across the top of the first page was spelled out—"the town gossip." He did not need to see the heading to know what he held in his hand. Everyone in the city knew the sheet, and many feared it. Twice a month it was published. Just who was behind it was not known, though there were, of course, many conjectures. A vulgar, gossipy sheet, it printed the vilest innuen- does, gossip and slander about the community. Around a small paragraph upon the front page of the lastest issue was drawn a black line: "It is rumored a divorce will soon occur in one of the families of the younger social set. The bride will be remembered for a round-the-world honeymoon trip three years ago. The couple have not clicked, rumor having it that the husband likes the blonds, while the wife is interested in someone else." His lips tightened as he read the hinted slander. Before he could speak, Rogan commented: "That's the Fletchers. They had a honeymoon trip round the world. I called Fletcher in—in fact you just missed him. It was not the item in the scan- dal sheet I was interested in—something else. Wanted to know if they had tried to blackmail him. They do, you know. It's all a great scheme—you are asked to buy stock in their worthless paper, and if you refuse, why, your name gets printed plenty. POISON UNKNOWN I thought maybe they had approached him, been turned down, and then had written him those anony- mous letters. But the answers Fletcher made to my questions surprised me." The chief leaned back in his chair—and sighed. "We watch that sheet, of course, every two weeks. The District Attorney has been trying to close it up. But unless the people they try to blackmail kick we can do nothing. Well, I saw the item, and sent for Fletcher. He informs me that he and his wife were on the verge of a divorce several months ago, but they patched it all up. Admitted he was approached to buy stock in the concern, but said he refused. Said the paper could not harm him, and laughed at my idea that they wrote him the letters." At this point the chief paused to ask suspiciously: "What do you want me to go out to his place for?" He was reminded that after all the solution of the two murders must be found in a clear conception of their setting. Manners had not revisited the estate since the woman's death. Seeing his friend's grave expression, the chief growled out that he would go, but that it would be fifteen minutes before he could leave the station. Content, Manners asked if he still had the anonymous letters Fletcher had re- ceived. He was told they were filed away, but that he could see them. Rogan had them brought into the office at once. And while the chief scowled over some document on his desk, Manners picked up a large magnifying glass and carefully examined the two letters. The paper could not be mistaken; they had been written 242 POISON UNKNOWN psychology is based upon the idea that we are all afraid of the unknown. This person we are seeking is far from happy. If he is a drinking man he is drinking a good deal to keep up his courage. If he is one who uses drugs he is whipping up his nerves with those. All murderers are emotionally unbal- anced. Normal people do not commit crime. So our unknown man is going round with his mind a tangle of fears. He wonders and he is afraid. Let's play on his fear." "How?" "Rogan, how much has been published in the papers about that saw I noted in Fletcher's boat- house?" "Nothing at all. We were trying to find a finger- print. There was one, but it was so blurred that it's of no value." "Fine I" came the retort. "Now suppose we use the saw as a bait for the murderer. First we put it back in the boat-house; then we spread the news that the police have overlooked searching it for fingerprints, and that it is to be brought to the sta- tion. Suppose the murderer hears this. He will rush to get it before we do—at least he will wish to make certain that it is wiped clean. And we shall be there waiting for him. You can be very certain that no one but the guilty person will be interested in that saw." Rogan's face twisted into thought. It might work —though, after all, it was hardly evidence of the type that could be used in a court of law. But it was his idea that Manners had far more in mind than he POISON UNKNOWN had put in words. It was a happy chance that noth- ing had yet been given the papers about the saw. Sud- denly Rogan remembered something that made him exclaim: "Harley! It's even better than you think. The night you found Mrs. Fletcher I put a man on guard at that boat-house. I thought maybe the person might come back. Next morning Fletcher sailed in early, with some cases of liquor, and I got the key to the place and locked it up. No one's been in it since that night. It's my idea nothing's known about the saw at all. You see, it was my thought that if we got a case against anyone the Grand Jury would wish to inspect the place. And I wanted to make certain nothing in the boat-house was touched. Your idea isn't bad; but—even if something comes of it —I can't see that you'll have any legal evidence." Manners admitted the last charge. But he went on to say that what the chief had just told him was even better than he had hoped for in the way of favorable circumstances. He added that he had another plan. What it was he refused to say. He mystified Rogan further by remarking calmly that it was quite possible that they might discover legal evidence which the guilty person would be unable to break down. The quiet confidence in Manners' voice rather disturbed Rogan. He seems pretty sure of himself, he thought. Wonder what he has up his sleeve? We have been working together most of the case. I know all he knows, perhaps more. Yet he seems per- fectly confident. Rogan was moved to irony: POISON UNKNOWN est idea. There was no one in the house except the cook and another maid. But she had no doubt it would be all right if they came in and examined the dining-room. And she stood aside for them to enter the hallway. Clearly she wished to remain within hearing dis- tance of whatever they might say. With a brusque command Manners sent her back to her tasks. When the door at the end of the long hallway had closed he passed through the living-room into the dining-room. Just inside the door he paused. It was a larger room than he remembered. The table stood in the same po- sition as on the night of the doctor's death. Taking a chair from against the wall, he placed it at the head of the table. It stood—as it had stood that night—in the very center of the middle window, which, though raised now, was not swung back. Stepping a few feet away he studied both window and chair. Yes, that was correct. He turned to Regan. "Sit in that chair for a moment, will you?" Carefully the chief let his heavy weight down into the chair. Soberly Manners studied him. The chief was not quite so tall as Langdon had been; the doctor's head would have been at least three inches higher. But Rogan was sitting in the exact position the doctor had sat in, and his back was to the middle window. Walking to the window Manners swung it out against the house. Then he looked back at the table. Rogan had impatiently turned in his direction. He was asked to whirl around and sit with his back to the window. When he obeyed, Manners studied the i48 POISON UNKNOWN white head, glancing outside several times. Yes, Langdon had been sitting in the very center of the middle window; and from outside, the lighted room would have been a brilliant mass of light and color. "Rogan," came his voice, "suppose you go outside and look in through this window. The chair is in the same position as when Langdon occupied it the night of his death. I want you to get the general layout well fixed in your mind." With a nod Rogan rose to leave the room. He was glad to get out in the open air—there one could light a stogie. He stood on the lawn as directed, looking in through the open window; though he was not much impressed by what he saw. The chair was very plain, however, and he had only to exercise his imagi- nation to picture Langdon sitting there. Nor was it difficult to picture also the wild confusion when the doctor's body slumped suddenly down on the table. After- Rogan's departure from the dining-room Manners stood quiet, thinking intently. In a moment there came to him a new thought; he hurried through the living-room, across the hallway, and into the small library. Apparently it had not been disturbed since the evening he had called the police from there. The same magazines were on the table, and the chairs were in the same positions as before. He noted this as he walked over to the book-case. It was an old-fashioned book-case, with a desk at- tachment and leaded glass to shield the books. Dis- covering that the doors were not locked he flung them open. His eyes traveled over the contents of the shelves: books mostly in brown and black bind- POISON UNKNOWN 251 line with the center window. As a thing of beauty it was far from a success; with only a few branches, it stood perhaps twenty feet high. On its trunk, facing the window, was a bird house. Rogan watched Manners walk around the tree, stop, lean against the slight trunk and look towards the dining-room windows. Then he saw his eyes go questioning towards the bird house. He wondered why he should be interested in the latter, and coming to his side threw back his head to look also. The bird house was large, and—so far as he could tell—was not occupied; though he would have thought almost any of the birds on the grounds would welcome the shelter. It was in the form of a cottage, with a slanting roof and even a little piazza before the round entrance, which was large, and directly in line with the window. When he turned his eyes away he discovered to his surprise that Manners was not in sight. Before he had chance to wonder what had happened to him he came in sight around the side of the house. There was a stepladder under his arm, and the chief won- dered what he planned to do with it. Manners al- ways surprised him—so he said nothing when the ladder was placed under the tree. Then he watched the professor climb and peer into the bird house. Manners, as he stood on the ladder, his eyes on a level with the roof of the miniature cottage, took note that the roof was not nailed down. Reaching out his hand, he lifted it from the walls. Climbing another step he was able to look into the interior of the bird house. It had not been used—though there POISON UNKNOWN 255 the boat without any apparent desire to examine the building further. As they came out into the bright sunshine he told the chief he might lock the door. At this the man, who had glued himself to their side, appeared to remember that he had work to do. Leav- ing them, he started back up the beach to his tasks. Not until they had climbed the steps, and again stood on the edge of the bluff, did Manners speak; and before saying a word he led Rogan over to a little wooden bench under a nearby tree and per- suaded him to sit down. Slowly, then, he lighted a cigarette, even turning for a moment to glance back at the lake. It stretched away to lose itself in what a stranger might have mistaken for a long, faint cloud. Manners knew that the sketchy line was the Ca- nadian shore. Not often did they see it: only on days when the air was very clear. Today it was a darker blue than the lake, a line that seemed to waver under the bright sun. For a moment he gazed at the calm beauty, then quietly turned to the chief. "Rogan," he said gravely, "listen while I tell you of the plan I have in mind." For some time the serious voice continued; and over the chief's face, as he listened, there passed conflicting expressions. What was Manners trying to tell him! Why, the idea was impossible, and what lay back of it incredible. Yet as he thought this, he hesitated. Manners was shrewd. Once he had read in a paper that he was the best-known professor in America of—yes, that was it—abnormal psychology. Just what it all might mean Rogan did not know. Something very deep and mysterious, without a POISON UNKNOWN 259 on it. Now you have at least something to work on." The toxicologist was torn between two emotions: on the one hand he wanted to rush to his work bench and study the fine print of the pamphlet; there were the experiments to make, a cablegram to send. On the other hand he was curious: Manners had in some unknown way discovered the identity of the poison that had killed Langdon. How or where he had found the unknown poison he did not know. But he wished to know. For it was the first time that any- one had ever come into his laboratory and named him a drug of which he had never heard. But his friend refused either to satisfy his curi- osity or to remain with him. So excited was Hoff that he did, then, something unprecedented. He followed his visitor down the stairs and even went out to the side of his car. But at the very moment the machine started to move he was off again back into the chem- istry building. He did not care to lose even a min- ute of the work which lay ahead. It was almost six when Manners drove into his yard; and the first object his eyes rested upon was the blue roadster. Its wheel had been repaired, and the car was standing in front of the garage. The next thing he saw was the dog, rushing in a wild frenzy to greet him. Speaking a word of welcome to the animal he brought the car to a stop; then leaned wearily against the seat. Though twilight was still several hours away, the sun was sinking low. A calm had come over the lawn; and there was not the slightest movement of the air. All that he could see was peaceful and beau- POISON UNKNOWN 261 floated into his memory. It was Ann Fletcher's slender body—sprawled in grotesque and pitiful posi- tion at the foot of the steps. And his face grew once more stern. It was almost nine when he drove back to the city. Darkness had fallen, and there was a slight breeze in the air. As he went curving his way down the hill he could see far below him the lights of the city: lights everywhere, their flame reflected against a dark sky. He took his time in reaching the police- station; for he was in a somber mood, and dreaded the hours that were ahead. Nor did he leave the blue car at the curb. Instead it came to rest in the police garage. He entered the chief's office to find it filled with people. There had been eight persons at the table the night Langdon was killed. Only six of them were in the office. The other two could not come—they would never be able to come. Behind the big desk sat Rogan, and his face lightened perceptibly when Manners en- tered the room. Standing about the room were sev- eral plain-clothes men. It was an uneasy group of people. They formed a little half-circle before the chief's desk; and when Manners came into the room cast an anxious look at the door. He saw Mary Moorhead, her head held high, but with a tiny flush upon her cheeks. As he passed her chair he smiled a little greeting. Beside her, unconcerned, though his small eyes kept darting around the room, was Fletcher. The little mustache was carefully waxed, the hair smoothly parted. Be- side him sat Davidson and his wife; and of the two POISON UNKNOWN 263 of my men will take you into the other room now. And if you recognize the man, or the photographs, a stenographer will take down your affidavit." He made a gesture, at which the two officers stepped to the center of the room. As the chairs were being pushed back and the six people rose to their feet, Rogan spoke again: "Oh—Mr. Fletcher," he said, "I want to ask a favor of you. Do you mind if some time late this evening, or early tomorrow morning, we search your boat-house? Of course I could get out a search war- rant; but it seems hardly necessary." The slight figure stared in astonishment at the chief of police. Before he could reply, Rogan smiled and added: "You see, we are not getting very far in this case. It may be that your identifications will help. But we have overlooked one thing: I heard today that there is a saw in your boat-house. It may be the instrument used to cut away that step. A fingerprint may be on it. We overlooked it. It seems hardly necessary to get out a search warrant for such a simple errand." There was no response in words: the man half- smiled and nodded his consent. With a word of com- mand the detectives were directed to lead the com- pany towards a door. They were all talking in low voices, and apparently seemed to think it an adven- ture. Mary Moorhead was last; lingering a little after the others had passed through the door, she threw a look at Manners. Her face was white, the eyes anxious. Before he could smile at her she had vanished. POISON UNKNOWN 265 long, low boat was waiting for them. As he stumbled into the stern Manners saw the dimly outlined figure of the police commissioner, and heard a short word of greeting. Settling into the seat he watched Rogan take his place at the bow, and heard his word of command. Like the explosion of a cannon the engine leaped into action. They were moving away from the dock. Ahead lay darkness, broken by the tiny light of some boat far in the distance. The speed began to increase. In a moment the shore was but a dim outline behind them. Turning, Manners raised his head and looked. Above and behind him were the glittering lights of the city. But when he looked once more ahead, all was but darkness and gloom. CHAPTER XVI After coming through the long narrow entrance of the harbor, the boat rose on the first gentle swell of the lake. It was a calm night, with scarcely a breath of air stirring. Pointing in the direction of Canada, the power fully turned on, the engine settled to a steady roar, the fast boat sped over the calm of the lake. Under the rushing prow the water was thrown aside in a torrent of spray, dropping behind in a mass of foam. A mile from the shore, and the direction was changed; they turned in a half-circle to skirt the curving shoreline. Though it could not be seen dis- tinctly it was yet not difficult to follow. On the lake road was a never-ending line of cars, their headlights a steady, moving stream of flame. Along the shore lights were intermittently observed, those in one cot- tage window vanishing as they picked up the gleam from another. Far down the shore was the light- house, its top faintly revealed in the steady flare of its fixed beacon. Though the engine roared loudly in his ears, yet to Manners there was a calmness about the night that was appealing. Above his head millions of stars sparkled against a black sky. There was the swift motion of the rushing water, the sound of dashing spray. Under ordinary circumstances these would have been all he needed to feel at peace with the world. Even now, he was conscious of the charm and 266 POISON UNKNOWN 267 mystery of the night—though he could not forget why they were rushing through the water. The commissioner was by his side, but Stone did not speak. In the bow of the boat sat Rogan, his figure a mere outlined shadow. For once he had no stogie between his lips, and he sat unmoving. Crouched over the engine, his thin face thrown into relief by a sheltered light, sat the mechanic, who never allowed his eyes to lift from the machinery. Save for the water thrown aside by their onward rush, and the steady roar of the engine, there was no sound. The shore could now be only dimly perceived, though once in a while they had a passing glimpse of a lighted pier. They were very low on the water; and Manners thought this might account for their seeing the lights of no other boats. Had it not been for the lights in the houses upon the shore, he might have fancied that they were alone in a vast universe: a universe in which they were rushing on to some undetermined goal. Ahead lay darkness. They had gone perhaps five miles down the lake before the boat began to curve towards the shore. The engine was cut at the moment they turned; and its heavy, explosive bark became a soft purr as the speed slackened. They could see the land now: could make out the vague blackness of the high bluff tower- ing above the shore. It resembled a great thick blanket of gloom, rising upwards in the air: a blanket that had height and depth—and only those. Closer and closer to the shore the boat drifted. Suddenly for a fraction of a second a light broke the 268 POISON UNKNOWN darkness. Once, twice, three times came a quick flash. A signal, Manners decided; and knew in a moment he was right. The boat had turned again, and was now running directly towards the shore. The engine was suddenly cut off. Noiselessly the boat drifted towards the beach. There came a slight shock as its bow struck the sand. Out of the darkness rushed a dim figure. Bending down, the man took the rope Rogan handed him, and with it pulled the boat up on the beach. The chief was the first one out, followed by Manners and Stone. Instinctively they came close together, as they walked a few feet up on the shore. It was Rogan's uneasy, whispering voice that broke the silence: "The boat-house is only a little way ahead of us. We will go there and wait. I have men up and down the beach. There is to be no shooting. And I told the men to make no noise." Pebbles and stones covered the shore: stones that slipped and moved under their feet. Even close to the water's edge the walking was not good. It was too dark to see the lake, though it was only a few feet away. High above their heads the bank rose, forming a deep pit of gloom which their eyes could not penetrate. The only sounds were the crunching of pebbles beneath their feet and the faint murmur of a motor-boat far down the lake. They walked perhaps two hundred yards before the outline of the boat-house loomed in front of them. As they came up against the veranda which ran to the front of the building, instinctively they gripped the wooden railing for support. Pulling themselves 270 POISON UNKNOWN into space. Looking upward, he noted the stars, pin- points of light in the sky; and to pass the time he tried to recall the names of those he recognized. Rogan was by his side. But Rogan was not looking at the stars; so far as he was concerned he could not have told whether they were shining. The chief was feeling gloomy. Sinister warnings seemed to fill the darkness folded around him. He heard Stone shift his weight once, and once thought the commis- sioner sighed. A fish jumped out of the water, to fall back with a heavy splash. The sound made Rogan start. He was nervous; he wondered again if he had been wise to agree to Manners' plan. True, Manners seemed certain that someone would come to the boat- house for the saw. What was more, he had one par- ticular person in mind. But who it was Rogan did not know; he would have felt more at ease if he had. Everything that Manners had asked had been done. Men from headquarters were scattered up and down the shore. They had received instructions to allow the person to enter the boat-house, then try to force him to ascend the steps leading to the bluff. Somewhere far up along the bluff an owl hooted, and the mournful cry made Rogan shiver. Then miles down the beach he saw the red blaze of a beach fire. The warm color, though it was far away, gave him a feeling of comfort; and he watched it till it died out. There remained nothing to do but study the water at his feet. He had given up thinking, and though he tried to listen, he could hear nothing. How long he sat there on the edge of the plat- form, with his legs dangling over the water, Man- POISON UNKNOWN 271 ners never knew. But long before he rose to his feet the waiting had become monotonous. To drop asleep would have been very easy; and once he did close his eyes for a moment. As the slow minutes slipped away there came the time when it seemed he had been sitting on the platform for ages. Time had become an empty thing. Then—all at once—he heard a faint sound. For a second he was tense; then pulling himself upright, he stealthily crept to the edge of the boat-house. Peering around its side he looked up the beach. Be- hind him crowded both Rogan and Stone. Like his own their eyes were trying to pierce the darkness. But nothing was visible. Far away, miles up the shore, sparkled a small cluster of lights—those of a beach resort close to the city; but in front of them were only the gloom of the bluff and the same dim blackness of the beach. With ears straining, they listened again. For the second time, a noise drifted faintly over the shore. They began to hear it intermittently; it would cease, only to return. Then the sound changed; and sud- denly they knew what it was. Someone was walking over the beach. They could identify the crunch of the stones one against the other. Then they heard the newcomer slip, and there came a muffled oath as he recovered his balance. He was approaching the boat- house, arid seemed to know exactly where he was going. Rogan's hand gripped Manners' shoulder. Feeling the pressure, the latter listened to the chief creeping softly over the boards. He was going down the side POISON UNKNOWN of the boat-house, to be close to one of the door*. For a moment Manners thought of following him, but gave up the idea because the man was now close to the building. They heard a hand fumbling with the door. There was the sound of a key scraping against a lock, fol- lowed by the creaking sound of a door hastily opened. Then silence. But though they were unable to hear anything, they knew that the man had en- tered the building, and Manners knew he was in the slip in which he himself had narrowly escaped drown- ing. He had to stifle back an impulse that swept over him: it would be very easy to creep along the side of the boat-house, rush to the door, and then slam it shut. The man would then be a prisoner. It would be very easy to capture him. He had to fight back the idea. The plan he had formulated depended upon the man's coming out of the boat-house and ascend- ing the flight of steps. Yet he barely mastered the impulse to rush to the front of the building and-^ang the door. No sounds came from within the boat-house. Turn- ing, Manners crept back along the veranda until he thought he was directly outside the slip. Above his head was a window, though it was too high to look through. But as he glanced upwards the glass was suddenly illuminated. A light had been shown, though only for a monrint. Moving ahead he crept along the other side of the building until he stood by the chief. At the moment he reached his side there came a sound at the front of the building. POISON UNKNOWN The man was coming out. And he was not very careful, for he stumbled down a step, and then swore. They heard the door being closed, a key rattling in the lock. At the sound Rogan stepped back until he was behind Manners. There was the faint sound of a match being struck, and for a second a tiny flame lighted the cupped circle of Rogan's hands. It was a signal for the men up the beach. The man had locked the door and was now retrac- ing his steps. Suddenly the stillness was broken by the short, sharp report of a gun, far up the shore* As he looked around the side of the building Man- ners saw the man stop short at the sound of the gun, then frantically begin to run. At the sight he leaped from the veranda to the beach and started after him. Behind him came Rogan's heavy, running footsteps. The vague figure was perhaps fifty yards in front of them. Bent forward, head down, the man was running. He was very close to the water, no doubt because the footing was better there than higher on the beach. Though it was dark they were able dimly to make out the flying outline; that of a man running as though he were desperately afraid: a slight figure, whose speed was faster than their own. Manners calculated there were but two things the fugitive could do. To climb the seventy-foot bluff was impossible. Either he must try to escape by run- ning up the beach, or he must climb the steep steps that led to the top of the bluff. For a moment Man- ners wondered which of these alternatives he would choose. Only one offered any possibility of escape. There was no sound but the rattling pebbles struck POISON UNKNOWN out by their flying feet. Manners could hear Rogan blundering along behind him, heard him slip as he stumbled. But no one spoke; nor was there any com- mand for the flying figure ahead to halt. They knew that such a command would be useless. The man was running as though his very life depended upon his escape. He had turned away now from the water; Man- ners could make out just ahead the dark line of the steps. They towered upwards, vanishing against the dark shadow of the bluff. The man was far up on the stones, running towards the steps. He was not going to attempt escape by the beach. Instead, if he could reach the top of the bluff, there was little doubt that he planned to lose himself in the vastness of Fletch- er's grounds. They were only thirty feet behind him when he leaped wildly for the first step. His hand clutched the rail as he started to climb upwards; and the sound of his feet hitting against the wood came to their ears. Just as they reached the bottom of the stairway, a long, shrill whistle broke the stillness. The notes pierced the darkness like the wailing cry of a lost soul. Rogan had blown his police whistle. They stood crowded together at the bottom of the * steps, looking upwards. Above their heads the dark, climbing figure was leaping from step to step. Ahead of him was the etched line of the edge of the bluff; beyond it lay darkness. And as they watched the climbing figure, suddenly the deep blackness was broken by a faint, indistinct light. It was only a tiny light, rising and falling in the 276 POISON UNKNOWN knew: a face filled with sadness, mingled with the calm of restful peace. It was Ann Fletcher's face, aglow with flame as it floated towards the figure crouching on the steps. There was no body below the face, not the faintest semblance of a body. Just the features could be seen: calm, beautiful, but plainly discernible. Gently it floated in the air, rising and falling with a wavering motion as it drifted downwards. And the downward motion was like that of a person slowly descending a long flight of stairs. On every side was darkness. Only on the steps was there any light. For a second the face, kindly, sad and beautiful, seemed to pause. Then rapidly it began to descend towards the crouching figure. The man rose—and threw back his head. They saw his arms reach forth in a wild appeal. Suddenly the silence was broken by a scream. It was the voice of a man deathly afraid, crying out wildly for mercy. They saw him turn— and start frantically down the steps. Then suddenly he stumbled. For a second—vainly—he tried to catch his balance; but the effort failed. With a loud cry, he went hurtling down the length of the steps to the shore. And as he plunged downwards the face above him suddenly vanished. Where it had been was utter darkness. The man had gone rolling over the rocky shore, and lay motionless close to the water's edge. It was Rogan who first reached his side, who took a flash- light from his pocket and played it over the still figure. As they crouched around the man Manners POISON UNKNOWN thought for a moment he was dead. Then there came a faint moan. He was just about to drop to his knees when the police doctor rushed out of the darkness. With Rogan's flash-light playing over the crumpled figure, Bell made a quick examination. The man was lying on his side, his arms and legs sprawled out in a sinister attitude. Manners noticed that the doctor made no effort to change his position: that the ex- amination was hasty. When it was over he suddenly lifted his head and, looking at Rogan, nodded. As he did so, the man tried to speak. What he was struggling to say Manners could not tell. The voice was very low: the stammered words disconnected. But at a look from Bell, both the com- missioner and the chief bent down to put their heads close to the whispering lips. What he was gasping out Manners could not hear; and he did not care to kneel down and listen. Darkness was on every side. The only light was the flame of the flash-light, resting upon the motion- less figure. Manners could hear the waves, and the broken, gasping, indistinct words from the lips of the man at his feet. And then all at once he heard noth- ing but the waves breaking on the shore. The lips had become silent. As he quickly looked down, both Rogan and the commissioner rose softly to their feet. "He's gone," was Rogan's low comment. "Ad- mitted both murders. Look!" Taking Manners' arm he walked him to the other side of the siltfht figure. At his gesture of command Bell threw the light over the still face. Strange to say 278 POISON UNKNOWN the hair was still nicely parted, though the little mustache was sadly disarranged. There on the rocky shore, his features twisted into a frightened, be- wildered stare, lay John Fletcher. CHAPTER XVII Above Rogan's head hung a single electric light bulb. Its flame fell directly upon the faces of the three men seated around the desk. Silent, sober men they were, whose grave countenances offered studies in varying expression. Each was thinking, and the same thought moved them all. They were glad they were not alone. Behind the cluttered desk, with a long stogie stuck at a rakish angle between his lips, sat the chief. Ever since he had seen that glowing face floating down the stairway he had been troubled. The unexpected shock of Fletcher's death had not removed his feel- ing of distrust. Fletcher was dead—he had confessed to the murders. But there would still be a great deal of explaining to do to a startled city. What was he going to tell the public? Taking the stogie from his lips he threw a long, puzzled look towards Manners: a look that contained both admiration and perplexity. "You will have to tell us all about it, Harley. I am getting to be an old man, and can't stand many more shocks like tonight. You gave me a hint as to what you were going to do. But that face! Never will I forget that thing floating down the steps. And then to discover that the man was Fletcher! It's al- most my worst try at solving crime: I hadn't a thing to go on, and all my theories were wrong." "You were right from the beginning, Rogan." 279 POISON UNKNOWN 281 The police commissioner took his pipe from his mouth, as he cast a doubtful look at the professor. Stone was the best lawyer in the city. He had heard Fletcher confess. But deep down in his heart he failed to see that there was any evidence against him. With a shake of his head he protested: "How can you be certain of what you are say- ing?'; "Simply this, Stone: Fletcher wrote the letters himself; like most criminals he made one bad mis- take : he used the wrong sort of paper. Those letters were written on the most expensive rag paper that is made. When I first saw them I thought that some of his wealthy friends might be playing a joke on him. If not, I knew with certainty that no one was black- mailing him. The type of people who write blackmail letters are not able to lay their hands on the most expensive paper made. At first I went no further than that thought: the letters had been written by some so-called friend. Later I made a discovery—I found the paper in his desk. I went into his office— ostensibly to write a note, really to get a chance at his typewriter. I got the chance—and I used paper found in his desk. It was identical with that in the notes Rogan has: same worn type in the letters, same paper. No doubt at all—he wrote them." Rogan still wanted to know why. If Manners said the letters had been written upon a typewriter and with paper found in Fletcher's office, then it was so. But what a silly thing after all—something that had no relation to the crimes! Instead of an answer Ro- gan received a question in return: 282 POISON UNKNOWN "What did Fletcher say when he brought the first letter to your office, Rogan?" "That he wanted two men to patrol his grounds because he was giving a dinner." "Yes, but what reason did he give for bringing in the letters?" The chief thought for a moment. Then he half- smiled: "Oh yes—said his wife had seen them, and was afraid." "His wife knew nothing about the letters," was the grave rejoinder. "Do you remember, Rogan, the afternoon we told her the doctor had been poisoned? She remarked that after Langdon died a policeman had come running into the dining-room, and how surprised she had been to see him. Now if she had begged her husband to bring the letters to you, if she wished police protection during the dinner, would she have been surprised to see a policeman? She didn't even know the police were on the grounds. If not— it's quite evident she knew nothing about the letters. Yet FletcherTsaid it was his wife who asked him to come to the police-station." Rogan gave a disgusted growl. She had said that. It was the afternoon when, after hearing that Lang- don had been poisoned, she had suddenly keeled over. She had said she had been startled by his detective's rushing into the dining-room. Manners was right on that point. "That was the first inconsistency in the case," Manners continued. "And it seemed a big one to me. Either Fletcher told the truth when he said his wife had been frightened by the letters, and desired police POISON UNKNOWN 283 protection; or he lied. If he lied, why did he? True, he might have been afraid, afraid of the supposedly unknown writer of the letters; and like many men, wishing to save his own pride, shifted the fear to his wife. But then, he mentioned there had been other letters, which he had not brought into the station. Why should he suddenly have wished protection the night of the dinner? He was riding round town in his car, going to the golf club, running here and there for days preceding. That did not show fear. I de- cided on the basis of Mrs. Fletcher's remark that he had lied to the chief. His wife knew nothing about the letters. It was Fletcher who wanted the police to be on his grounds during the dinner. He needed an alibi." He paused to dig a cigarette from his pocket; then continued: "That brought up the real problem. If he had lied, why had he done so? Then I began to puzzle over a second thing: had anyone sent him anonymous letters? I was about to conclude no— that he wrote them himself—when Tollen suddenly complicated all my thinking." He paused again for a moment. "But Tollen com- plicated the theory I was forming only till it became evident he could never have written the letters Rogan had seen. First, he could never have procured the paper they were written on; second, there was his denial that he had written them. I was back again to my real question: why had Fletcher lied? The an- swer I reached was simple, though it led to another question. The letters were to be used in order that the police might be on the grounds during the dinner. POISON UNKNOWN 285 "There was one suspicious thing in that dining- room. We were very lucky to be there shortly after the crime. Fletcher's idea turned out to be a boom- erang. If the police had not been on the grounds he might have got by. On the other hand, if Rogan had not been worried about the old police superstition none of us would even have gone to the house." The chief yanked the stogie from his lips to utter a violent protest. "Superstition!" he snorted. "You say it was a darned good thing I was 'superstitious.' That saying is true! But what was suspicious in the dining-room?" "There was one very odd thing. The table was so placed that its head was just in line with the central window. There are five windows: four of them were raised; but the central one—the one directly back of the head of the table—was thrown entirely back against the house, screen and all. It was a warm night; there were insects on the lawn; the lights within the room would attract them. Yet one window was swung entirely open. It looked suspicious." Rogan gave only a grunt at this. Stone was think- ing rapidly. So far it was all good reasoning; but it was still not legal evidence. Yet he knew Fletcher had been guilty; he had heard the broken, faltering words from his dying lips; and he was still shaken by the experience. He bent forward as Manners went on. "When we heard the account of the dinner from the guests, there was one fact that stood out for me: Langdon had not at first been sitting in the chair that was in a direct line with the center window. Yet it was intended he should sit there. See what happened. 288 POISON UNKNOWN switch. It would take several moments for the ex- posed wire to burn through the cord. When it does burn through, the gun will go off. One of these meth- ods was used. If you will look in that bird house you will find nails there—nails fixed to hold some object in a firm position. And you will find also a hole— a hole through which a wire has passed. "It has been established that Fletcher bought a gas pistol some time ago. Kent dug that up this after- noon. Any glass capsule, made of thin glass, with a sharp point, would have done the trick. As the poison was in a capsule, as no human hand fired the shot, it may be presumed to have come out of a gun. An air pistol makes no report. It would have had, of course, to be concealed. The bird house was the ideal possibility. No bird had been allowed to build a nest in the house: it was clean. Either some clock arrange- ment was used to fire the pistol, or—better still—the radio gives us the explanation. A radio fight program was used as an excuse to have Langdon move his seat to the head of the table. There was no important fight on the air that night." Silence fell for a while. Rogan was willing to agree with what had been said; so was Stone—up to a certain point. His keen legal mind was still looking for evidence that could be used in a court room. The finding of the paper in Fletcher's office would be legal evidence that he had written the letters. Man- ners' statement that Kent had discovered Fletcher's purchase of the gas pistol would also be evidence. But neither would prove murder. Yet even as he thought this, he knew Manners' theory was sound. 29o POISON UNKNOWN made from the bark of a tree found in the northern parts of the Island. Though the natives knew of its violent properties and how to produce it, they knew little else. Today very little is known about it. It kills in a moment or so if introduced into the body. The reactions are similar to those of aconitine, and also to those of strychnine. Only one tree in the world produces this poison, the bark of the Pukatea. From this it takes its name." "But," came the startled voice of Stone, "you say it's unknown. How did you ever discover what was used?" Manners turned to the commissioner. His face was grave, his eyes thoughtful: "Stone, you and I are like all men of our type. We rarely question whether there be such a thing as fate behind life. A man goes out to kill. His plan is perfect, well thought out. But some little forgotten thing trips him up, and fate steps in and brings dis- aster. So in this case. Fletcher knew nothing of the superstition about a new police-station. There was not a chance in a thousand to suspect that a murder had been committed. But the murderer had to battle against one thing he could not foresee: his own psychological weakness, his own personality. Mur- ders are committed not by supermen, but by emo- tionally unbalanced persons. Fletcher's scheme was perfect—except for one little overlooked thing. And this brought disaster. Again and again it has hap- pened in murder cases. The murderer made one mis- take, a simple one." "What?" growled the chief. POISON UNKNOWN illuminated dial showed twelve. A day had ended; another was beginning. With a sigh he climbed into the machine. As his hand went searching for the ignition there came a weary grunt from his side. Rogan spoke. The tone was that of a man who questions whether he will ever again find rest. "Harley," he said slowly, "God knows I am tired. It's going to be a long time before I forget that face on the steps. And never—never—do I want to hear a doctor say it again I" "Say what?" The reply was so long in coming that Manners turned on the switch. There came the sound of the engine springing into life, and following it the plain- tive voice at his side: "Poison unknown." The End The greatest pleasure in life is that of reading. Why not then own the books of great novelists when the price is so small 1$ Of all the amusements which can possibly T>e imagined for a hard-working man, after his daily toil, or in its intervals, there is nothing like reading an entertaining book. It calls for no bodily exertion. It transports him into a livelier, and gayer, and more di- versified and interesting scene, and while lie enjoys himself there he may forget the evils of the present moment. 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