Italian horror maestro Dario Argento's tale begins at a grim séance which ends in blind panic as a voice, possessed by evil, proclaims there is a murderer present. Terrified, a young girl (Asia Argento) watches as her parents flee from the scene. The next time she sees them they are dead - their headless corpses identifying them as the latest victims of a serial killer. Convinced she will be the next victim, the girl pleads with a friend to help her unmask the murderer.