Popular high school senior Virginia Wainwright (Melissa Sue Anderson) survives a freak accident, but suffers from memory loss and traumatic blackouts. As she attempts to resume a normal life, something terrible is happening - her friends are being ruthlessly murdered one by one. But will she be the next victim or is she the killer?Director J Lee Thompson's classic shocker was made during the period before the horror genre drenched itself in irony and self-reflexivity, and instead revels in the effective staging of the terrifying set-pieces which drive it towards its climax. Extras:HD restorationOriginal mono audioAlternative 5.1 surround sound trackAlternative score: experience the film with the controversial re-scored electronic music soundtrack, as used on the 2004 home video re-releaseAudio commentary by The Hysteria Continues team: Justin Kerswell (author of Teenage Wasteland: The Slasher Movie Uncut) Joseph Henson, Erik Threlfall and Nathan JohnsonImage gallery: on-set and promot