Are Gialli horror or no horror? Anyway, this one has a lot of blood (and also a lot of sexy women) and the killings are quite gruesome:
SO SWEET, SO DEAD (1972, Roberto Bianchi Montero)
In a small provincial town in the South of Italy a maniac is killing adulterous women, always leaving compromising photographs on the spot.
The Italian title of this movie is hypnotic: /_Rivelazioni di un maniaco sessuale al capo della squadra mobile_/, in English: /_Revelations of a sexual maniac to the head of the flying squad_/. The idea of a serial killer talking to the police is a familiar but (provided it’s well-used) effective story device, but the scenes with the maniac talking to the police inspector investigating the case only appear very late into the movie. For most part this is a well-made and stylish, but otherwise unexceptional genre piece.
The female cast includes, among others, Femi Benussi, Sylvia Koschina, Krista Nell, Nieves Navarro and Annabella Incontrera, and you’ll get ample opportunity to watch them all in the nude or semi-nude. Now if that’s not a good reason to watch this movie! Apparently a special version (called 'Penetration’) was edited for the American market, featuring hardcore scenes starring porn stars Harry Reems (Deep Throat) and Tina Russell. The version available on You Tube is not that version. I repeat: Not.
In Italian, English subtitles: