Kitty, a photographer living in Rome, witnesses the murder of a young woman at the hands of a razor-wielding black-gloved killer. Kitty and her fiancé Alberto go to the police, only to learn that two other witnesses to the crime have been slashed to death.

Kitty, a photographer living in Rome, witnesses the murder of a young woman at the hands of a razor-wielding black-gloved killer. Kitty and her fiancé Alberto go to the police, only to learn that two other witnesses to the crime have been slashed to death.