“Only the maid,” said Loris.

“Go in, please, and wait. I’m going to lock everything up. We’re going to take every precaution this time. Frankly, I don’t see how any agency can do more than we have already. Were we dealing with ordinary crooks or blackmailers, I would have you take a taxi and move to some Fifth Avenue hotel. But it seems an unnecessary risk. This is the safest place in the world, despite the letter from the casket company and the former warning. What man can enter this place to-night—without our permission?”

“I’d like to see one!” blurted Delaney.

Harry Nichols offered his arm to Loris. They passed from the view of the two detectives with the locked, gliding stride of two dancers who moved to slow time. Drew heard the portières which led to the writing-room rustle downward and settle into place. He passed his hand over his forehead and breathed deeply.

“We’ll get busy,” he whispered tersely. “We’ll search these rooms again. Let’s start with a definite foundation!”

Delaney grunted at the uselessness of this as he reached and took the detective’s overcoat which was peeled off and extended to him.

“Hang it on a chair,” said Drew sharply. “Over there with my hat. Now,” he snapped, “what about the windows of this room, the little reception hall and the bedroom over there? That’s a bedroom, isn’t it?”

“Sure, Chief! I frisked it good. The Central Office men were up here early in the morning. They went through everything. Fosdick, they say, was like a bull. He said the thing couldn’t be done.”

“It was done!”

“Did you get any clue, Chief, as to how it was done?”