Could it be that he was mistaken, that his fears were imaginary?
Perhaps, after all-- At that sharp ring of the doorbell downstairs he walked noiselessly to the window, and shrank back with the startled look of a man who has had his first glimpse of the bared teeth of the law.

He stood still, listening intently.

He heard the door opened, a sharp question, then the sound of ascending footsteps.

When the knock came at his own door he was in complete command of himself as he went to open it.

He was well aware of the ordeal before him, but he did not show it.