Except for a sudden start, the clerk appeared the picture of innocence. "What letter?" he parried. "You know what one!" snapped Allison, dropping his suave manner and moving his hand significantly toward his coat pocket. "Will you produce it--or shall I?" "I--I don't know what you are talking about," stammered the clerk. "No? Well, I'll show you!" and the operative's hands flashed forward and there was a slight click as a pair of handcuffs snapped into place. "Now, Mr. Rogers, you'll be good enough to watch me carefully, as your evidence will probably be needed in court. I'll show you as simple and clever a scheme as I've ever run across." With that Allison dropped to the floor, wormed his way under the table-desk, tugged at something for a moment and then rose, holding five large envelopes in his hands! "There's your lost one hundred thousand dollars," he explained, "and a dummy packet of thirty-five thousand dollars to boot. Thought you could get away with it indefinitely, eh?" he inquired of the handcuffed clerk. "If you'd stopped with the one hundred thousand dollars, as you'd probably intended to do, you might have. But that extra letter turned the trick. Too bad it contained only blank paper"--and he ripped the envelope open to prove his assertion. "But--but--I don't understand," faltered Rogers. "How did this man work it right under our eyes?" "He didn't," declared Allison. "He tried to work it right under mine, but he couldn't get away with it. The plan was simplicity itself. He'd slip an envelope which he knew contained a large sum of money out of the pile as it passed him--he hadn't signed for them, so he wasn't taking any special risk--drop it on the floor, stoop over, and, if he wasn't being watched, attach it to the _bottom_ of his desk with a wad of chewing gum. You boasted that you went over the room with a fine-tooth comb, but who would think of looking on the under side of this table. The idea, of course, was that he'd wait for the storm to blow over--because the letters could remain in their hiding places for months, if necessary--and then start on a lifelong vacation with his spoils as capital. But he made the error of overcapitalization and I very much fear that he'll put in at least ten years at Leavenworth or Morgantown. But I'd like to bet he never chews another piece of gum!" * * * * *