AllMovie

This adaptation of Enrique Jarber Bergua's horror novel is very similar in tone and story to Mario Bava's Cinque Bambole per la Luna d'Agosto (1970), itself a variant of Agatha Christie's And Then There Were None. A movie actress named Annette Lamark (Glenda Allen) and several of her friends spend a holiday on her private island. Annette's son Christian is kidnapped soon after they arrive, and then the guests start disappearing one by one. Detective Juan Ribas (Alberto Dalbes) is charged with tracking down the killer. Mario Alex, Luis Induni, and Yelena Samarina also appear, but the film belongs to Montserrat Prous as Annette's sister Valerie. Prous may be the only interesting thing about this uninspiring thriller, lackadaisically directed by cult filmmaker Jesus Franco.