Captive Wild Woman

Animal trainer Fred Mason (Milburn Stone) returns to the States after a lengthy trip to Africa, bringing back caged jungle cats for his circus act, along with one highly intelligent female gorilla. Meanwhile, his fiancé, Beth (Evelyn Ankers), has been dallying with suave glandular specialist Dr. Walters (John Carradine), who is working on a cure for her afflicted sister, Dorothy (Martha Vickers). The zany Dr. Walters kidnaps the gorilla and turns her into a beautiful woman (Acquanetta) via injections of Dorothy's glandular extracts. When the inexperienced ape-girl later develops a crush on Mason, she lets jealousy revert her to a sort of were-ape state and tries to kill rival Beth. Walters later berates his creation for letting feminine instinct undo his great scientific achievement. (official distributor synopsis)