Explore "The Master Mystery" by Arthur B. Reeve; John W. Grey on Textopian. Read with annotations and highlights.
It was midnight when, far down in the rock-hewn cavern in which the Automaton had his secret den, the steel monster and one of his men stalked out through the arched passage that led to the very cellar of the house above them.
A few moments later the swinging rock door in the Graveyard of Genius tilted and the two entered the strong-room, passing across the room and out through the steel door into the cellar. Up the cellar steps they proceeded until they reached the hall, then noiselessly they crossed into the library. With his human companion the monster approached the safe deliberately. Just as deliberately the Automaton reached out to turn the handle of the combination.