"That was pretty sharp of you to tie up Merton with the case," commented Morgan. "Of course, when you mentioned it to me I saw its possibilities. Before that I was thrown off the track by the fact that Merton was reported to have been missing for ten days, whereas this supposed crime occurred at two o'clock last Tuesday morning. Why do you suppose that fellow Hunt threw us off like that?"
"Probably he did not do it intentionally," answered Marsh. "Hunt is running the business for Merton, and very likely saw little of him outside of the once. It may have been ten days since Merton had appeared at his office, although only a few days since he was missing from the hotel."
"What made you suspect it in the first place?" inquired Morgan.
"I'll tell you the whole story," said Marsh. "Naturally, I was watching the papers for missing people. When I saw that announcement this morning, and remembered the 'M' on the cuff button, it began to look like a possibility. At any rate, it was worth looking up. To get at the real facts, I knew that I would have to be on the inside, so I presented myself to Hunt this morning as a private investigator who was anxious to get the job of looking up Merton in the interest of his office. I think I got closer to Hunt than any policeman ever would. In fact, I was furnished with inside information that may or may not be significant. This man Hunt holds a power of attorney from Merton, and Merton's will names him as sole executor, Of course, to a criminal investigator that sounds bad on its face. On the other hand, if Hunt possessed such power with Merton there could be no object in his wanting to get him out of the way. Certainly, a man in Hunt's position would not have had dealings with a crook like Atwood. Furthermore, if Hunt did want to make away with Merton, he would more likely do it himself than take the risk of employing others, and so place himself in a position to be blackmailed later. Carrying the thought still further, would a clever man like Atwood take a chance of upsetting his own plans by hiring himself out to Hunt as a common thug?"
"I am positive that Atwood either killed or kidnapped Merton, for I have discovered, through the telephone girl at the hotel, that Merton received a telephone call at twelve o'clock Monday night, summoning him out. That telephone call was supposed to come from the Ames apartment. At two o'clock Tuesday morning the shot was fired in that apartment and Merton has not been seen since. We know definitely that Atwood occupies the apartment across the hall, but at this time I cannot see any possible connection between the two men. Hunt is evidently nervous, because it is my opinion that he used undue influence over Merton, and this disappearance has placed him in a peculiar position. I particularly called this phase of the case to his attention this morning, and subtly suggested that my work would be of value to him in preventing suspicion on the part of the police. That feature was plainly what made him decide to employ me, and I am relying upon it to eventually get further valuable information."
"The little book, with notes in cipher, which we discovered in Merton's room, is somewhat of a puzzle to me just now. It may contain information that will be helpful, or it may prove just a memoranda of business deals. We must not overlook the fact that a man in Merton's line of work, and the men with whom he did business, have many big plans which must be kept secret until they are launched. That book may have contained data along such lines, and Merton may have simply been referring to it when suddenly called out. You will recall that we found a memorandum regarding business transactions covering the book."
"But," protested Morgan, "there must have been some connection between Merton and Atwood or else Atwood would not have taken such a dangerous step against him. Even you will admit that Atwood was not an ordinary crook. Doubtless, then, every step he took was the result of a definite plan."
"Quite true," agreed Marsh, "but there was never a plan yet that didn't have possibilities of failure. You remember what I have said before; that I believed that shot to have been a mistake. If the shot was a mistake, could not other mistakes have also crept in? Get Atwood and I believe that many things will be cleared up."
"Now there is one thing more," went on Marsh. "I cannot tell you where I got the tip, and the information is only general. Still it helps. There are at least four men in the gang we seek, and their headquarters is in some suburban house near Chicago. The most important point, however, is this: they know positively that we are after them, and have made arrangements to get out at the first opportunity. That means WE must work fast."
Morgan was sitting in his favorite chair by the table. Marsh was seated at the front of the room with his back to the window. At this moment the window glass above his head cracked, a dull thud sounded on the wall across the room, and bits of paper and plaster dropped to the floor.