He listened intently.

“It’s fear of the deadliest sort,” I finished.

“Fear of the police?”

“I—I think not. It is fear of something in the house. They are always listening and watching at the top of the front stairs. They have lifted all the carpets, so that every footstep echoes through the whole house. Mrs. Reed goes down to the first door, but never alone. To-day I found that the back staircase is locked off at top and bottom. There are doors.”

I gave him my rough diagram of the house. It was too dark to see it.

“It is only tentative,” I explained. “So much of the house is locked up, and every movement of mine is under surveillance. Without baths there are about twelve large rooms, counting the third floor. I’ve not been able to get there, but I thought that to-night I’d try to look about.”

“You had no sleep last night?”

“Three hours—from four to seven this morning.”

We had crossed into the public square and were walking slowly under the trees. Now he stopped and faced me.

“I don’t like the look of it, Miss Adams,” he said. “Ordinary panic goes and hides. But here’s a fear that knows what it’s afraid of and takes methodical steps for protection. I didn’t want you to take the case, you know that; but now I’m not going to insult you by asking you to give it up. But I’m going to see that you are protected. There will be some one across the street every night as long as you are in the house.”