Jack heard the shout, and the opening of the door, and presently the ominous sound of heavy feet coming after him! He had lost sight of Hank when he fell; and now he had not the faintest idea which way his companions had fled. Had he paused to observe and listen, he might perhaps have heard their retreating footsteps, or caught sight of their gliding forms in the darkness; but the tall form treading close at his heels left him no time for consideration. He went plunging blindly over the wall, and heard the stones rattle again as his pursuer came plunging after him.