Suddenly, without saying anything, Graines, who had been at his side, left him, and hastened to the companion, where he stooped down and gazed into the cabin. Christy had heard nothing to attract his attention, but he concluded that Captain Sullendine had escaped from his prison, and he called the two men who had been stationed in the waist to the quarter-deck to render such assistance as the engineer might need; but this officer remained at the entrance to the cabin, and made no further movement.