"Night of the Demon" is a 1957 horror film directed by Jacques Tourneur. The story follows a skeptical psychologist, Dr. John Holden, who travels to a remote location to investigate the mysterious death of a colleague. He soon encounters a cult led by Professor Henry Harrington, who practices dark magic and believes in the existence of a demonic force. The film is notable for its atmospheric tension and the use of special effects to depict the demon. It explores themes of belief, skepticism, and the supernatural, making it a classic in the horror genre. The film's haunting visuals and suspenseful narrative have earned it a lasting reputation.