Wicked, Wicked (1973)

Wicked, Wicked (1973) is a crime thriller movie that tells the story of a psychotic killer who goes on a murder spree at a hotel. The film features a masked murderer, sadism, and a series of gruesome murders. It also explores the themes of psychopathy and psycho-terror. The story is told through a unique split-screen technique called 'Duo-Vision'.