Ιταλία/Italy. 1963, εγχ./col.

Σκην./Dir.: Mario Bava. Σεν./Scr.: Ernesto Gastaldi, Ugo Guerra, Luciano Martino. Φωτ./ Cin.:Ubaldo Terzano, Mario Bava. Μοντ./Ed.: Renato Cinquini. Μουσ./Mus.: Carlo Rustichelli. Ηθ./Cast: Barbara Steele, John Richardson, Andrea Checchi, Ivo Garrani. Παρ./Prod.: Federico Magnaghi. Διάρκεια/Dur.: 85΄.

A ruthless and sadistic 19th Century nobleman returns to his castle after years of wondering. He finds himself immediately in conflict with his father, as well as his spineless younger brother, who is married to his former lover. When he is found dead in his room on the next night, suspicion falls on everyone.