The light went out though the girl had not gone to rest. The watcher stood up against the wall. The harpsichord still sounded, with no other noise. He opened his door, went down stairs with caution, and opened the door of Andrea's sitting-room.

Suddenly she stopped in the melancholy strain, although she had not heard the intruder. As she was trying to recall the thrill which had mastered her, it came anew. She shivered all over. In the mirror she saw movement. The shadow in the doorway could only be her father or a servant. Nothing more natural.

But she saw with spiritual eyes that it was none of these.

"My lord," she faltered, "in heaven's name, what want you?"

It was the stranger, in the black velvet riding coat, for he had discarded his silken suit, in which a mesmerist cannot well work his power.

She tried to rise, but could not; she tried to open her mouth to scream, but with a pass of both hands Balsamo froze the sound on her lips.

With no strength or will, Andrea let her head sink on her shoulder.

At this juncture Balsamo believed he heard a noise at the window. Quickly turning, he caught sight of a man's face beyond. He frowned, and, strangely enough, the same impression flitted across the medium's face.

"Sleep!" he commanded, lowering the hands he had held above her head with a smooth gesture, and persevering in filling her with the mesmeric fluid in crushing columns. "I will you to sleep."

All yielded to this mighty will. Andrea leaned her elbow on the musical-instrument case, her head on her hand, and slept.