Interestedly, Dundee surveyed the scene of his attempted murder. If he had unsuspectingly gone up to the high shelf to reach for the book he would have stood so close to the register that there would have been powder burns on his shirt front—just as there had been on Dexter Sprague's. And he would have been shot so near an open window—no chance for fingerprints there, either, since he had not closed the windows on his departure for New York, not wishing to return to a stuffy apartment—that the police would have been justified in thinking he had been shot from outside. It was an old-fashioned house in more ways than in the manner of its heating. Outside of one of his two unscreened windows there was an iron grating—the topmost landing of a fire escape. Dundee could imagine Captain Strawn's positiveness in placing the murderer there—crouching in wait for his victim....
Yes, damned ingenious, this attempted murder! Undoubtedly Strawn would have dismissed the note as the work of a crank, not hitting upon the fact that it had been written in that very room, on Dundee's own typewriter and stationery. Strawn might even have got a mournful sort of amusement out of the fact that Dundee had been advised to call upon a greater detective than himself for assistance!... Yes, ingenious indeed! And so amazingly simple——
Suddenly the young detective snatched for his hat. If the murderer was so ingenious in this case, might he not have been equally clever in planning and executing the murder of Nita Leigh Selim?
Twenty minutes later he parked his car in the rutty road before the Selim house in Primrose Meadows, and honked his horn loudly to attract the attention of the plainclothesmen Captain Strawn had detailed immediately after the murder to guard the premises during the day. There was no answer. And a violent ringing of the doorbell also brought no response. The guard had been withdrawn, probably to join the small army of plainclothesmen and patrolmen who had been foolishly and futilely searching for the New York gunman—the keystone of Captain Strawn's exploded theory.
With an oath, Dundee used his skeleton key to release the Yale lock with which the front door was equipped. Straight down the main hall he went and into the little foyer between the hall and Nita's bedroom. He snatched up the telephone and to his relief it was not dead. He gave the number of Captain Strawn's home, and had the pleasure of learning that he had interrupted his former chief at a late Sunday breakfast.
"When did you withdraw the guard from the Selim house?" he asked abruptly, cutting short Strawn's cordial welcome-home.
"Late Thursday afternoon," the Chief of the Homicide Squad answered belligerently. "I needed all my men, and the Selim house had been gone over with a fine tooth comb half a dozen times.... Why?"
"Oh, nothing!" Dundee retorted wearily, and hung up the receiver after assuring his old friend that he would call on him later in the day.
No use to explain now to Strawn that the murderer had been given every chance to remove any betraying traces of his crime. Besides, his first excited hunch, after his own attempted murder, might very well be a wild, groundless one. In his—Dundee's case—the impossibility of the murder's being delayed or arranged so that the detective might be slain when the whole "crowd" was assembled was obvious. The murderer had read in a late Saturday afternoon extra—a copy of which was now in Dundee's pocket—District Attorney Sanderson's boast to the press that his office had been working on an entirely different theory than that which connected the two murders with "Swallow-tail Sammy," that Special Investigator Dundee, expected back in Hamilton early Sunday morning, had been investigating Nita Leigh's past life in New York. And despite Dundee's telegraphed warning, he had hinted sensational revelations connected with the twelve-year-old royal blue velvet dress which Nita had chosen to be her shroud. And in his desire to reassure the public through the press, Sanderson had mysteriously promised even more specific revelations than Dundee had actually brought home with him. Prodded by reporters, Sanderson had admitted that he did not himself know the nature of those revelations.
The exasperated young detective could picture the murderer reading those sensational hints and promises, could imagine his panic, the need for immediate action, so that Special Investigator Dundee should not live to tell the tale of his New York discoveries to the district attorney or anyone else.