When a Neanderthal man is lynched by villagers, Count Frankenstein uses his years of research to bring the monster back to life. The process is a tricky one, however, as the count must avoid detection by the authorities, the furious locals and his own daughter (who's preparing for her wedding).
Dr Roger Mell (Ray Milland), a physician and headmaster of a boarding school, is having an affair with the beautiful Sonja (Sylva Koscina), a married woman. He arranges to have the husband murdered, but is mortified to find out that the hitman killed the husband by blowing up a plane on take-off killing 140 people. In a fit of rage, Dr Mell kills the hitman, but realizes that o...