This story is told from the perspective of Dr. Allan Fenwicke, a rational materialist if there ever was one. He publically debunks the spiritualist beliefs of his fellow physician Dr. Lloyd, and thereby hastens his colleague's demise. Soon after, the Mysterious enters Dr. Fenwicke's logical life in the form of the lovely and dreamy Lillian and the wickedly amoral Mr. Margrave. Mr. Margrave may or may not be the evil Louis Grayle made young again with black magic. But our hero Dr. Fenwicke will brave all to rescue his Lillian.