Giallo thrillers and spaghetti westerns are generally considered genres created by the Italian film industry but producers and filmmakers in other European countries also created their own versions in these categories, especially in Spain. Director/Screenwriter Joaquin Luis Romero Marchent, a native of Madrid, is best known for his Spanish take on wild west oaters but he did make a film that could be classified as a giallo. El Juego del Adulterio (English title: The Game of Adultery aka The Deadly Triangle, 1973) is blessed with a title that sounds like an erotic melodrama or maybe a softcore soap opera for the grindhouse crowd. It definitely has elements of that but is actually a psychological thriller crossed with a murder mystery.