Rock Hudson portrays Dr. Paul Holliston, a scientist who is deeply involved in experimental work on human foetuses. During a flash storm he accidentally runs down and kills a pregnant dog and whilst attempting to save the dog's unborn pups, he inadvertently discovers how to accelerate the growing process of a foetus into a mature adult in just a few days. Driven by curiosity, he tries the same process on a human female foetus, the result is Victoria who grows rapidly into a 25 year old voluptuous woman. Dr Holliston soon falls in love with Victoria but her drugs start to cause side effects and she begins to kill in order to survive. The race is now on... for a kill or cure solution.

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