“Joseph!” ejaculated Phelps.

“He was bareheaded, but he had a black coat thrown over his shoulder so that he could conceal his face in an instant if there were any alarm. He walked on tiptoe under the shadow of the wall, and when he reached the window he worked a long-bladed knife through the sash and pushed back the catch. Then he flung open the window, and putting his knife through the crack in the shutters, he thrust the bar up and swung them open.