Drew hurried through the tapestries, stopped, and examined the lock of the door before he shot home a second bolt which was functioned by a butterfly of heavy gold alloy. He stood erect with both hands pressing at his temples. It came to him with double force that the same precautions had been taken when Stockbridge was alone in the library downstairs. There was the lock of superior make and the winged-latch. There was the two-inch, or more, door of dark wood. There were the servants and detectives both within and outside the mansion. Yet the millionaire had been reached in a secret manner through all the precautions. "Things repeat, sometimes," mused Drew, fingering the catch and the flat key. "The same conditions bring the same results. I----" The detective's voice trailed into a whisper as he heard footsteps outside the door. He reached back to his pocket and waited. His heart thumped like a prisoned bird within his breast. It was a case of strained nerves. He felt the responsibility of guarding Loris. "Bah!" he exclaimed, recovering himself and squaring his jaw. "Bah," he repeated. "It's somebody for me." He opened the door after twisting the butterfly and turning the flat key in the lock. A blurred figure pressed forward. A gruff voice boomed from a muffling collar. "Hello, Chief! I'm back in a half-hour! No luck, either!" Drew waited until Delaney had removed his overcoat and overshoes, which he placed in one corner by a hall-tree. "What did you find?" he asked glancing toward the tapestries. "The fellow's beat it for good. Landlady says he owes her one week's rent. He cleaned out with a suit-case and left this." The operative reached in his pocket and brought forth a single drill of quarter-inch diameter. He held it out. "All I could find, Chief, after a quick frisk. This was in the mattress." "Regulation lineman's wood-bit," said Drew as he examined the size number on the shank. "This might have been the one used in boring the hole between the slot-booths at Grand Central Station." "Then Albert is the lad, Chief?" "We don't know, yet. There's lots of bits like this one. Did you try it for fingerprints?" "They're all rubbed off! I had to pull it from the mattress. It was stuck in a hole near the foot of the bed." "Hold it!" said Drew. "Hold it for evidence. Put it with your plaster casts. Now----" "Well, Chief?" Drew glanced at his watch. "I'm going out to that drug-store," he said. "I want to phone. I can't use the phones of this house. The wires may be tapped. You stay right by this door and wait till I get back. It won't be more than ten minutes. Go get my hat when you're putting the bit away. It's in the corner by Loris and Nichols. Tell them I'm stepping out and that you will stand guard. They might hold me. She is very nervous."