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 mass 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 circumstances 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 associated 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 pass 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 accumulated 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 button, however, with its initial "M" was more direct in its accusation. It might be the principal hold on the suspect. Morgan admitted that the evidence was purely circumstantial, 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.