5 Bambole Per La Luna D'agosto (aka 5 Dolls For An August Moon) (1970)

A wealthy industrialist (Teodor Corra) hosts a private weekend party at a private island. But when a houseboy (Mauro Bosco) is found murdered, it is only the beginning of the body count. And of course, all communication with the outside is cut off and there's no way to get off the island. Directed by Mario Bava in the style of TEN LITTLE INDIANS, this is Agatha Christie meets Eurotrash. Not one of Bava's strongest vehicles, it's a fun giallo if extremely far fetched. Definitely a case of style over substance. The oddest character is a young teen girl (Justine Gall) who drifts around the edges of the film. You're not sure if she's one of the guests or some odd waif who lives somewhere on the island. Never released in the United States, it remains one of Bava's most divisive films (Bava himself dismisses it) while some of his admirers defend it. There's a nice 70s easy listening score by Mario Umilani. With Ira Von Furstenberg, William Berger, Edwige Fenech, Maurice Poli, Renato Rossini and Helena Ronee.