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Film: Reazione a Catena

Reazione a Catena (also known as Bay of Blood, Twitch of the Death Nerve, Ecologia del Delitto...) is a 1971 horror film by Mario Bava. Designed as a comeback film after he lost his distribution deal with American International Pictures, Bava effectively created a film that has served as the blueprint for the Bodycount/Slasher genre of horror, with many of its sequences copied by other horror films (most notably Friday the 13th (1980) and its first sequel).

The film's plot is a convoluted "Who Done It", as people begin dying left and right during the course of a long weekend at the lakeside home of an elderly heiress. There are multiple murderers at work, as a slew of shady characters (and a quartet of sex-obsessed teens) end up dying in horrific fashion. There is also a surprise ending that will shock you...

This film provides examples of:

The Toolbox MurdersVideo NastiesVisiting Hours
Re-AnimatorHorror Films[REC]
TrinityFilms of the 1970s200Motels
Return to Horror HighSlasher MovieSanta's Slay

alternative title(s): Reazione A Catena
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