The strange murder of a countess, Isa Miranda, which was wrongly considered as a suicide, triggers a lot of weird killings at a bay. There takes place several grisly murders between tourists and inhabitants carried out by a strange killer . Along the way a group of vacationers : Brigitte Skay, Anna Maria Rossati.. are mercelessly chased by a homicidal maniac armed with a sickle, bent on decapitation . Each is progressively murdered, knifed, speared and axed. There are various suspect people, a rather disturbed man, Claudio Volonte, who lives by the bay, a rare couple living in the surrounding area formed by a Medium : Laura Betti, her husband : Leopoldo Trieste , and a marriage, Claudine Auger and her hubby : Luigi Pistilli who attempt to take the large state from the deceased countess.
Ordinary sick Mario Bava terror flick, it contains thrills, chills, nudism, gory effects, and high body-count. It displays a confusing plot dealing with non-sense murders and an inheritance wished by heirs, ambitious people, and investment speculators into selling land. The film is a fair murder mystery at a wild weekend in which a group retread at an isolated location and a killer goes around to slice up as well as hack people who are relentlessly butchered . The cast of vacationers and visitors is interchangeable and they keep straight and in some cases cases more easily identifiable by their interpretations in Spaghetti Westerns as Claudio Camaso, Luigi Pistilli, Chris Avran or in James Bond movie as Claudine Auger of Thunderball. Supposedly the inspiration for The Friday the 13th and once again followed by numerous, equally gory sequels in which a series killer slaughter and annhilates people at a lakeside cottage.
The picture titled Bay of blood, or, Last house on the left part 2, or, Carnage, or, Ecologia del Delitto, was well directed by Mario Bava in his usual style. Bava uses his ordinary visual tricks, sustaining interest enough, while the twisted and well-designed murders steal the show. Bava was an expert on terror movies such as : I vampiri, Black Sunday, The Whip and the Body, The girl who knew too much, Black Sabbath, Planet of Vampires, Kill baby kill, Hatchet for the honeymoon, 5 dolls for an August Moon, Torture of chamber of baron blood, Lisa and the Devil, Shock. Though Bava also made other genre as Peplum : Hercules in the haunted world, sex comedy : Four times that night, Viking movie : Knives of the avenger and Oriental fantasy : The wonders of Aladdin. The picture will appeal to terror genre buffs. Rating 6.5/10.