AKA Twitch Of The Death Nerve, and distributed in the USA under the title The Last House On The Left Part 2 despite having nothing whatsoever to do with Wes Cravens film, this 1971 effort is considered to be Mario Bava's most violent film and is the spouting artery from which all future slasher films would flow. When crippled Countess Federica is murdered at her isolated mansion, a gruesome battle ensues to secure the rights to her valuable property around an isolated bay. Everyone, from illegitimate children to shady real estate agents, stakes a claim, only to be killed in increasingly bizarre ways, from simple shootings to a couple impaled by a fishing spear whilst having sex. The gruesome makeup effects are by Carlo Rambaldi, who would later earn Oscars for his work in Alien (1979) and E.T. (1982). Total Film magazine named it one of the 50 greatest horror films of all time.