| Directed by |
Mario Bava |
|
| Screenplay by |
Ennio de Concini Mario Serandrei |
|
| Cast: | ||
| Katia Vajda / Princess Asa Vajda | Barbara Steele | |
| Dr. Andrej Gorobec / Dr. Andreas Gorobec | John Richardson | |
| Dr. Choma Kruvajan / Dr. Thomas Kruvajan | Andrea Checchi | |
| Prince Vajda | Ivo Garrani | |
| Igor Javutich / Javuto | Arturo Dominici | |
| Prince Constantine Vajda | Enrico Olivieri | |
| Priest | Antonio Pierfederici | |
| Director of photography |
Mario Bava |
|
| Executive Producer |
Samuel Z. Arkoff |
|
| Edited by |
Mario Serandrei |
|
| Year: | 1960 | |
| Running time: | 87 minutes | |
| Country: | Italy | |
| Language: | Italian | |