This shocker from Italian maestro Mario Bava was a major inspiration for "Friday the 13th" and other gore films. It traces the events following the supposed suicide of Countess Federica, the owner of a bayside estate. A group of people vie for the property as a series of ghastly murders occur. Claudine Auger ("Thunderball") stars. AKA: "Twitch of the Death Nerve." 84 min. Widescreen; Soundtrack: English; alternate Italian-language cut; audio commentary; theatrical trailers.