As numerous unscrupulous people strive to take over her enormous estate, the death of a wealthy countess, which was mistakenly ruled a suicide, sets off a chain reaction of terrible killings in the surrounding bay region.
Mario Bava directed the 1971 Italian giallo slasher film A Bay of Blood (Ecologia del delitto). The script was co-written by Bava, Giuseppe Zaccariello, Filippo Ottoni, and Sergio Canevari, with Dardano Sacchetti and Franco Barberi receiving narrative credit. Claudine Auger, Luigi Pistilli, Brigitte Skay, Nicoletta Elmi, and Laura Betti feature in the film. The horrible special make-up effects were produced by Carlo Rambaldi. The plot revolves around a series of strange deaths that take place in and around the namesake bay.
The emphasis on vividly gruesome murder scene pieces in Bava’s most violent picture was immensely influential on the slasher film subgenre that would follow a decade later. Total Film magazine called A Bay of Blood one of the 50 best horror films of all time in 2005.