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Gray is the wife of scientist Terry, who is experimenting with prolonging youth. They travel to Africa, where Gray discovers that her husband has been using her as a guinea pig for his laboratory work. She kills him when she learns through a tribal ritual that she can preserve her youth with the pineal gland of males. Then she goes on a killing rampage to keep that youthful look. Williams arrives on the scene to put a stop to her rejuvenating process. Striking makeup by Bud Westmore is the film's only appeal.