The Corpse Vanishes (1942)

Dr. George Lorenz (Bela Lugosi) and his wife (Elizabeth Russell) are getting on in years, but they've thought of a way to thwart aging. Lorenz abducts a nubile bride-to-be, Alice (Joan Barclay), and plans to extract her valuable bodily fluids to inject into his wife, restoring her health and vitality. Journalist Patricia Hunter (Luana Walters) is investigating the case of the missing bride, but, when the trail leads her to Lorenz, she doesn't realize she's in danger of becoming his next victim.