was a loud bang, I wasn't sure if it was a shot. I stood and listened. Then I came slowly to the door and looked out. Then I went back again, hesitated a bit, you know, and finally decided to go across to the office, and make sure that it was all right. I turned the handle of the door and found it was locked. Then I got frightened, and I banged at the door, and shouted, and—well, that was when Mr. Gillingham arrived." He went on to explain how they had found the body.
The inspector looked at him with a smile.
"Yes, well, we shall have to go over some of that again, Mr. Cayley. Mr. Mark, now. You thought he was in the Temple. Could he have come in, and gone up to his room, without your seeing him?"
"There are back stairs. He wouldn't have used them in the ordinary way, of course. But I wasn't in the hall all the afternoon. He might easily have gone upstairs without my knowing anything about it."
"So that you weren't surprised when you saw him coming down?"
"Oh, not a bit."
"Well, did he say anything?"
"He said, 'Robert's here?' or something of the sort. I suppose he'd heard the bell, or the voices in the hall."
"Which way does his bedroom face? Could he have seen him coming down the drive?"
"He might have, yes."
