Morgan leaped forward and threw the door open. With the sound of the opening door both men heard somebody break into a hasty descent of the stairs. Morgan dashed through the door and down the stairs.

Tierney followed close behind him. Before they reached the front door they heard the roar of an opened m.u.f.fler and an accelerated engine, and by the time they reached the front steps there was nothing to be seen except the black shadow of an automobile without lights rapidly disappearing down Sheffield Avenue.

"Well, I'm d.a.m.ned!" growled Tierney, as the car disappeared.

Morgan said nothing, but stood thoughtfully gazing down the street.

"What do you make of it?" inquired Tierney.

"Let's go up again," suggested Morgan, without replying to the question.

Back in the living room, the men resumed their seats, and spoke in lowered voices.

"It's hard to tell what it means," Morgan at last replied. "That's the first time anything of the kind ever happened to me."

"How did you get wise?" asked Tierney.

"I heard the door move several times," Morgan explained. "At first I thought it was the wind, but the last time I heard it I was sure it had a different sound. It seemed to me that somebody had leaned against the door while trying to listen."

"By G.o.d!" exclaimed Tierney. "This is SOME case, Morgan. Are we spying on somebody, or is somebody spying on us? Marsh trails a girl; I chase up Marsh; and now I'm d.a.m.ned if I don't think somebody's chasing me, too."

"It begins to look like a bigger case than I thought, Tierney. An ordinary murderer usually gets out of town or lays low. Quite likely somebody is afraid we will unearth more than a murder. You run along now. I want to be alone to think things over. On your way home stop off and look up Murphy. Find out whether or not Marsh has left the house tonight. Telephone me what you find out."

"Sure thing," answered Tierney, and picking up his hat, hurried away.

Morgan sat down in his chair and began to refill his pipe. After lighting it, he settled back into his chair and meditated on the case. Reviewing in his mind the various bits of fact, information and incident which he now had at hand, he endeavored to separate or combine them according to their direct bearing upon the case.

In his earlier days Morgan had learned that a criminal case was something like a dusty roadway. Many tracks crossed and re-crossed one another, becoming just a bewildering ma.s.s to the untrained eye.

In the present instance, the situation in the Atwood apartment had queer aspects which seemed to connect it with the incident of the night before. The suspicious points were not so glaringly apparent, perhaps, as the circ.u.mstances which connected the man Marsh, but they were there just the same. While the Atwood situation attracted Morgan, he was inclined to believe that he had actually uncovered some other situation; of a criminal nature, perhaps, but not a.s.sociated with his present investigations. To one unfamiliar with crime, the incident of Marsh following the girl might have seemed to form a connection, but Morgan realized that if there was anything between the Atwoods and Marsh, the latter would hardly have been secretly following Miss Atwood.

On the other hand, it was quite possible that a clever criminal, of the type he now suspected Marsh to be, having successfully accomplished one job, might have another in mind, which he thought he could execute before forced to make his final getaway. Instead of attributing this incident to a connection between the Atwoods and Marsh, Morgan figured that it weighed somewhat in the Atwoods'

favor, while still further incriminating the man Marsh.

At this point in his reflections the telephone bell rang, and answering it, Morgan heard Tierney's voice.

"I've just seen Murphy," reported Tierney. "He says that Marsh came home about seven-thirty and has not been out since; unless he slipped out the back door. This doesn't seem likely as there is another man watching the rear. He don't know Marsh, but he would find out before he let anyone go. Murphy says he has seen a shadow pa.s.s the windows several times during the evening, and we are pretty sure that Marsh is the only person in that flat."

"All right," replied Morgan. They exchanged good-byes, and Morgan replaced the telephone on the tabouret.

Settling back into his chair once more, Morgan came to the conclusion that one or more of Marsh's confederates of the night before had simply been endeavoring to get information so as to warn Marsh whether or not he was suspected. Morgan knew that, as usual, he and Tierney had talked in guarded voices, so he felt confident that little, if any, of their conversation had been overheard. It was the anxiety of the person on the other side of the door to try and catch their words which had led him to lean heavily against the door and so warn Morgan of his presence. Morgan felt fairly certain that he would find Marsh at home the next day, and after that, if any reports could be conveyed to him, they would be of little use.

Piecing together, one by one, the various bits of evidence he had acc.u.mulated against Marsh, convinced Morgan that this was the man he wanted. The flattened bullet, the cigarette ashes, and the hand marks could not identify anyone. The cuff b.u.t.ton, however, with its initial "M" was more direct in its accusation. It might be the princ.i.p.al hold on the suspect. Morgan admitted that the evidence was purely circ.u.mstantial, and that there was really nothing in it to convict a man in a court of law, but there was enough evidence to take Marsh up on suspicion, and past experience made him confident that once he had this man at Headquarters, the usual grilling would extract enough information from him to lead them to sufficient evidence of a positive nature.

There was, of course, still a doubt as to whether or not an actual crime had been committed. But something surely had happened, and Morgan began to feel that the next day would throw considerable light on what it was.

Having reached these conclusions, and a determination to visit Marsh the next day and take him into custody, Morgan went to bed.

At the first note from his alarm clock the next morning, Morgan jumped promptly out of bed. After awakening his mother so that she could get his breakfast, he hastily dressed.

Just as he was swallowing the last of his coffee there came a prolonged ring at the bell. His mother went to the door, and returned with a Western Union envelope. "My final bit of evidence!"

exclaimed Morgan, as he hurriedly tore off the end of the envelope and read the cablegram within. It was brief and to the point, and read just as Morgan had antic.i.p.ated it would.

Marsh unknown to me. Ames.

CHAPTER VII

MR. MARSH

Morgan had hardly expected such an early reply when he sent his inquiry to Mr. Ames regarding his acquaintance with Marsh. It was possible, however, that Mr. Ames had made an early morning call on his London bankers, and had immediately dispatched his reply. Morgan was glad that it had arrived at this opportune moment. With Murphy to testify that Marsh had claimed Ames as a friend, and with this cablegram to prove the falsity of the claim, he had at least one unanswerable piece of evidence of a suspicious nature to warrant his proposed action against the man.

Bidding his mother good-bye, Morgan hurried around to the elevated station. He purchased a package of cigarettes at the news stand, and climbed the steps two at a time to catch a train he heard approaching. A few minutes later he got off at the Wilson Avenue station, crossed Wilson Avenue to Sheridan Road, and turning north soon spotted Tierney at the corner of Lawrence Avenue.

"h.e.l.lo," Morgan greeted him. "Any news?"

"No," replied Tierney. "I relieved Murphy at six o'clock this morning, and another man has taken up the watch in the alleyway.

Murphy saw nothing of Marsh, and he said the light went out in his flat about 10:30. The man who watched the alleyway didn't see a soul except the milkman. Marsh came out a little while ago and I followed him. He had a quick breakfast in the waffle shop just below here, and I trailed him back again."

"I guess I'll find my man in, all right," said Morgan. "I'll go up now. You tell the man in the alleyway to keep his eyes open while I'm inside. In about ten minutes, if he doesn't hear anything from me, he can come up and wait outside Marsh's door. We'll leave him there that long in case Marsh should try to slip out the back way when he hears me at the door. If he doesn't hear from me in ten minutes he can be sure that I got in. He will then probably be more useful close at hand in the event that anything should slip up.

After you tell him what to do, you can go ahead with the photographs."

Tierney nodded in acknowledgment of these instructions and started back to the alleyway. Morgan entered the apartment house, climbed the stairs to Marsh's door, and rang the bell. Marsh immediately opened the door. It seemed to Morgan as if Marsh must have been standing there awaiting his ring, yet how could the man have suspected Morgan's intention to call on him at this time? It looked strangely like the man had been on watch at the door.

"Good morning," said Marsh.

"Good morning," returned Morgan. "I want to have a little talk with you."

Marsh invited him in with a pleasant ring in his voice, and indicated the living room with a motion of his hand. Morgan entered and sat down on a chair close to the entrance, laying his hat on the floor by the chair. Marsh watched Morgan sit down in this strategical location, and then, with a slight smile, strolled across and seated himself in a big chair near the fireplace. Resting his elbows on the arms of the chair, and interlacing his fingers in front of him, he looked at Morgan.

"Well?" he said.

Morgan unb.u.t.toned his coat and exhibited his badge. "I am Detective Sergeant Morgan of the Chicago Police Department."

"Oh, yes--Dave Morgan."

Morgan looked at Marsh sharply. "You've heard of me before, have you?" he said.

"Not until early Tuesday morning," smiled Marsh. "Then I heard one of the policemen refer to the fact that this would be a job for Dave Morgan. Evidently you have quite a reputation here in Chicago, Mr.

Morgan."

"Among crooks--yes," snapped Morgan. The easy att.i.tude of the other man was just a little puzzling. Morgan, however, was inclined to attribute it to his confidence that they were not in a position to actually fasten any guilt upon him. He suspected that the man was playing a game, and this not only nettled him, but served to strengthen his suspicions. Morgan went on.

"I have been a.s.signed to this murder case upstairs, Mr. Marsh. After considerable investigation I find it will be necessary to ask you a few questions."

Marsh nodded but said nothing.

Morgan sat silent for a moment, as if considering how to begin.