very loud and knocked on the boy's table. I thought Denson would come when he heard that, but no—there was not a sound. So I got more uneasy, and I opened the window and leaned out as far as I could, to look in at the other window. There I could see nothing but the big hat and the back of a chair and a bit of the room—empty. So I went and banged the outer door again, and called out, 'Hi! Mr. Denson, you're wanted! Hi! d'y'ear?' and knocked with my umbrella on the inner door; and, Mr. Hewitt—you might have knocked me down with half a feather when I got no answer at all—not a sound! I opened the door, Mr. Hewitt, and there was nobody there—nobody! There was my leather case on the table, open—and empty! Fifteen t'ousant pounds in tiamonts, Mr. Hewitt—it ruins me!"
Hewitt rose, and flung wide the inner office door. "This is certainly the only door," he said, "and that is the only window—quite well in view from where you sat. There is the wideawake hat still hanging there—see, it is quite new; obviously brought for you to look at, it would seem. The door and the window were not used, and the chimney is impossible—register grate. But there was one other way—there."
The inner wall of each of the rooms was the wall
