"Shall I send for the engineer, and tell him to bring tools?" he asked.

"There is nothing else for it," admitted Steingall with a shrug. Be it remembered he had seen Curtis, and heard his story. If such a man had committed the most daring crime recorded in New York during a decade, and had flouted the police with such cool effrontery, he (Steingall) would never again trust impressions.

The policemen, the clerk, and a strong-armed artificer went up in the elevator, and, after an imperative knock and a loud-voiced summons to open had been met with blank silence from the interior of No. 605, the workman got busy. The door was stout, and offered a stubborn resistance. It had to be forced off its upper hinge; then it yielded so suddenly that it fell into the room, with the engineer sprawling on top of it. The man yelled, thinking he was being plunged headlong into tragedy, but Steingall switched on the lights, and four pairs of eager eyes peered at nothing in particular. They found the golf clubs, which partially explained the blocking of the door, though it did not occur to any of them at once that the open window might have caused the bag to fall. They rummaged Curtis's portmanteaux and steamer trunks, and came upon evidence in plenty to prove that he was no mere masquerader in another man's name. But that was all. They could form no theory to account for his disappearance, until Steingall noticed the key, lying on the dressing-table, which, with its odds and ends of small articles, was the last place to invite scrutiny. He was gazing at it when the blind flapped, and the door of the wardrobe creaked.

"Confound it!" he cried. "The bedroom door was fastened by accident! The man forgot his key. Look here! I'll show you just how it came about."

He illustrated the slipping of the clubs, and his theory was borne out subsequently by the negro porter who had brought Curtis's belongings upstairs. But an atmosphere of suspicion, of non-comprehension, had been created around the missing man, and it was not to be dispelled, even in Steingall's acute mind, by whittling away the mystery of the blocked door to a minor incident which might occur in any hotel any day.

Leaving the mechanic and the negro to patch the shattered door sufficiently to serve its purpose until it was replaced by another in the morning, the clerk escorted the representatives of the law downstairs. Of course, their departure from the hall and their prolonged absence had been noted by the phalanx of reporters, and they were surrounded instantly. Searching questions were fired at them, but Steingall, who knew how to use the press for his own ends, countered by asking genially:

"In your hunt for copy, have any of you boys come across Mr. John D. Curtis?"

"The man who really saw the riot? I guess not. We want him badly."

An approving grin from his colleagues vouched for the speaker's accuracy.

"Who was killed, anyhow, Steingall?" demanded the journalist who had answered the detective.