The infant daughter of Jack the Ripper is witness to the brutal murder of her mother by her father. Fifteen years later she is a troubled young woman who is seemingly possessed by the spirit of her father. While in a trance she continues his murderous killing spree but has no recollection of the events afterwards. A sympathetic psychiatrist takes her in and is convinced he can cure her condition. Soon, however, he regrets his decision. As a young child Jack the Ripper's daughter witnesses him kill her mother. As a young woman she carries on the murderous reign of her father. A psychiatrist tries to cure her with tragic consequences.
