Kitty (Susan Scott), a photographer living in Rome, accidentally witnesses the murder of a young woman at the hands of a razor-wielding maniac. She and her fiancé, Alberto (Robert Hoffmann), go to the police--only to learn that two other witnesses to the crime have been slashed to death. Kitty fears that she will be the next victim when her ballerina friend Magda (Cristina Tamborra) is brutally killed by the same elusive culprit.