Plot: Paul Decker murders his wife in her Italian villa by drugging her milk and asphyxiating her by gas. He cleverly locks the bedroom from the inside and hides inside a trapdoor in the floor until after the body is discovered by servants. He uses a scuba snorkel connected to tubes on the outside to breathe during the ordeal. Decker's stepdaughter Candy suspects him immediately, especially since no suicide note was found. She also is convinced that he murdered her father years before, but her accusations fall on deaf ears. The ruthless Decker even poisons the family spaniel when the pet takes too great an interest in the mask and realizes he will ultimately have to get rid of Candy too.
Alternative Plot: On the Italian coast, writer Paul Decker (Peter Van Eyck), who has grown unhappy in his marriage, executes what appears to be a perfect murder of his wife. Although Paul is believed to be writing a book in France, his stepdaughter, Candy (Mandy Miller), is sure that he murdered her mother, and suspects he also murdered her father years before. With the police unwilling to investigate any further, Candy sets out to confirm her suspicions and take Paul down herself.
Rate this movie!