A Bay of Blood (1971)

/ 10
1 User Ratings
1h 25m
Running Time

September 8, 1971
Release Date

A Bay of Blood (1971)

/ 10
1 User Ratings
1h 25m
Running Time

September 8, 1971
Release Date

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Watch A Bay of Blood Trailer


An elderly heiress is killed by her husband who wants control of her fortunes. What ensues is an all-out murder spree as relatives and friends attempt to reduce the inheritance playing field, complicated by some teenagers who decide to camp out in a dilapidated building on the estate.

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Currently A Bay of Blood is available for streaming online, rent, buy or watch for free on: Shudder, Shudder Amazon Channel, AMC+, AMC+ Amazon Channel, Shudder Apple TV Channel, Tubi TV, Plex, Amazon Prime Video, Amazon Prime Video with Ads, The Roku Channel, Freevee, Kanopy, Shout! Factory TV, Plex Channel

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This Movie Is About.

gore · 
murder · 
slasher · 
suicide · 
maniac · 
squid · 
ax murder · 
axe · 


Release Date
September 8, 1971

Original Name
Ecologia del delitto


Running Time
1h 25m


Last updated:


A Bay of Blood (Italian: Ecologia del delitto, lit. "Ecology of Crime", later retitled Reazione a catena [lit. "Chain Reaction"]) (also known as Carnage, Twitch of the Death Nerve and Blood Bath) is a 1971 Italian giallo slasher film directed by Mario Bava. Bava co-wrote the screenplay with Giuseppe Zaccariello, Filippo Ottoni, and Sergio Canevari, with story credit given to Dardano Sacchetti and Franco Barberi. The film stars Claudine Auger, Luigi Pistilli, Brigitte Skay, Nicoletta Elmi and Laura Betti. Carlo Rambaldi created the gruesome special make-up effects. The story details a string of mysterious murders that occur around the titular bay.

Widely considered Bava's most violent film, its emphasis on graphically bloody murder set pieces was hugely influential on the slasher film subgenre that would follow a decade later. In 2005, the magazine Total Film named A Bay of Blood one of the 50 greatest horror films of all time.

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