Chayne looked quickly and curiously at her.
Then as quickly he looked again to the window.

Both men in the room were now lit up by the yellow light; their attitudes, their figures were very clear but small, like marionettes upon the stage of some tiny theater.
Chayne watched them with no less suspense now that he knew who the intruder was.

Unlike Sylvia he had betrayed no surprise when he had seen Garratt Skinner's head and shoulders rise into view behind Walter Hine; and unlike Sylvia, he did not relax his vigilance.

Suddenly Garratt Skinner stepped forward, very quickly, very silently.

With one step he was close behind his friend; and then just as he was about to move again--it seemed to Sylvia that he was raising his arm, perhaps to touch his friend upon the shoulder--Chayne whistled--whistled sharply, shrilly and with a kind of urgency which Sylvia did not understand.
Walter Hine leaned forward out of the window.