Antonio Bido directed this well-crafted Italian giallo thriller, which borrows from the masters of the genre: Mario Bava and Dario Argento. The story concerns a young nightclub dancer (Sylvia Kramer/Paola Tedesco) who witnesses a murder and the efforts of her lover (Richard Stewart/Corrado Pani) to track down the killer before he can get to her. With this film, Bido created a work that was both stylish and well plotted. Replete with the haunting atmosphere and gruesome deaths one expects from the genre, plus an outstanding musical score.