Ecologia del delitto, also known as Reazione a catena and A Bay of Blood, is an Italian thriller directed by Mario Bava in 1971. Forerunner of the slasher movies, the film begins with a countess killed by her ex-husband, who is killed shortly after. From now on, the murders pile up on top of each other. Some critics wrote that this film was an inspiration for films like Friday the 13th and Halloween.
In the 25th minute Brigitte Skay strips totally naked and then dives into a lake. The actress gives us a breathtaking full-frontal nude, first in the water, then when she runs onto the dock, frightened by the presence of a dead body in the water. Unfortunately, this is the only nude scene in the film.
