when he reached home he did not at once resume hisexploration of Reginald’s papers. He had hardly lit a cigarette when, at an unusually early hour, he heard Reginald’s key in the lock.

Quickly he turned the light out and in the semi-darkness, lit up by an electric lantern below, barricaded the door as on the previous night. Then he went to bed without finding sleep.

Supreme silence reigned over the house. Even the elevator had ceased to run. Ernest’s brain was all ear. He heard Reginald walking up and down in the studio. Not the smallest movement escaped his attention. Thus hours passed. When the clock struck twelve, he was still walking up and down, down and up, up and down.

One o’clock.