Directed By: Mario Bava
Written By: Marcello Fondato
Story By: Mario Bava & Giuseppe Barilla
Cinematography: Ubaldo Terzano
Editor: Mario Serandrei
Cast: Cameron Mitchell, Eva Bartok, Thomas Reiner, Arianna Gorini, Mary Arden, Franco Ressel, Dante Dipaolo
Isabella, a young model is murdered by a mysterious masked figure at a boarding house run by Max Morlan and his lover Countess Christina Como. When Isabella's boyfriend is suspected of the killing, her diary, which apparently has some incriminating evidence linking her to the killer, disappears, the masked killer begins killing off all the models in and around the house to find the diary.
