In the high-octane supernatural thriller Speed Demon, a reckless street racer played by William Collier Jr. makes a desperate pact with a malevolent force after a catastrophic crash. He is granted otherworldly speed and reflexes, transforming him into an unbeatable legend on the midnight asphalt. As he dominates every challenger, including rivals portrayed by Wheeler Oakman and Robert Ellis, the terrifying cost of his power begins to manifest, haunting him through visions and a relentless supernatural pursuit. Directed by Peter Winther, the film races through a shadowy world where every victory bleeds into a nightmare, forcing the driver to confront what he has truly unleashed before the demonic debt comes due. Co-starring Joan Marsh and Fuzzy Knight, this chilling tale merges pulse-pounding action with a creeping dread, exploring the deadly price of ambition and speed.