Itinerant magician Balzamo arrives in the town where Dr. Emerson and his pretty young wife live. Smitten with Mrs. Emerson, Balzamo places her under a hypnotic spell and takes her away with him. Many years later, as she lies near death, she warns her daughter Dorothy to flee from the evil Balzamo.

"Here is the strange story of a girl with two selves- two souls,-one of them good, one of them bad. And the things that one did the other knew nothing of. Can you imagine the possibilities in such a plot?"