Robert Adair

A struggling actress tries to help a friend prove his innocence when he's accused of murdering the husband of a high-society entertainer.

Dr. Frankenstein and his monster both turn out to be alive, not killed as previously believed. Dr. Frankenstein wants to get out of the evil experiment business, but when a mad scientist, Dr. Pretorius, kidnaps his wife, Dr. Frankenstein agrees to help him create a new creature.

Showman Jerry Travers is working for producer Horace Hardwick in London. Jerry demonstrates his new dance steps late one night in Horace's hotel room, much to the annoyance of sleeping Dale Tremont below. She goes upstairs to complain and the two are immediately attracted to each other. Complications arise when Dale mistakes Jerry for Horace.

Working in Dr. Cranley's laboratory, scientist Jack Griffin was always given the latitude to conduct some of his own experiments. His sudden departure, however, has Cranley's daughter Flora worried about him. Griffin has taken a room at the nearby Lion's Head Inn, hoping to reverse an experiment he conducted on himself that made him invisible. But the experimental drug has also warped his mind, making him aggressive and dangerous. He's prepared to do whatever it takes to restore his appearance.

After recovering from injuries sustained in the mob attack upon himself and his creation, Dr. Frankenstein falls under the control of his former mentor, Dr. Pretorius, who insists the now-chastened doctor resume his experiments in creating new life. Meanwhile, the Monster remains on the run from those who wish to destroy him without understanding that his intentions are generally good despite his lack of socialization and self-control.