Directed by
| Mario Bava | ||
Writing Credits
| Mario Bava | ... | (screenplay) & |
| Alfredo Leone | ... | (screenplay) (as Alfred Leone) |
| Giorgio Maulini | ... | (screenplay) (uncredited) |
| Romano Migliorini | ... | (screenplay) (uncredited) |
| Roberto Natale | ... | (screenplay) (uncredited) |
| Francesca Rusishka | ... | (screenplay) (uncredited) |
Cast (in credits order) verified as complete
| Telly Savalas | ... | Leandro | |
| Elke Sommer | ... | Lisa Reiner / Elena | |
| Sylva Koscina | ... | Sophia Lehar (as Silva Koscina) | |
 |
Alessio Orano | ... | Max |
| Gabriele Tinti | ... | George | |
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Kathleen Leone | ... | Tourist (as Kathy Leone) |
| Eduardo Fajardo | ... | Francis Lehar | |
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Franz von Treuberg | ... | Shopkeeper |
| Espartaco Santoni | ... | Carlo | |
| Alida Valli | ... | Countess | |
Produced by
| José Gutiérrez Maesso | ... | co-producer (uncredited) |
| Alfredo Leone | ... | producer (as Alfred Leone) |
Music by
| Carlo Savina | ||
Cinematography by
| Cecilio Paniagua | ... | director of photography |
| Mario Bava | ... | (uncredited) |
Editing by
| Carlo Reali | ||
Art Direction by
| Nedo Azzini | ||
Set Decoration by
| Rafael Ferri | ||
Makeup Department
| Adalgisa Favella | ... | hair dresser (as Gisa Favella) |
| Franco Freda | ... | makeup artist |
Production Management
| Fausto Lupi | ... | production manager |
| Giuseppe De Blasio | ... | executive in charge of production (uncredited) |
| Bruno Frascà | ... | production manager (uncredited) |
Second Unit Director or Assistant Director
| Lamberto Bava | ... | assistant director |
Art Department
| Mario Bava | ... | paintings (uncredited) |
| Carlo Rambaldi | ... | sculptor (uncredited) |
| Fabrizio Sforza | ... | sculptor (uncredited) |
Special Effects by
| Franco Tocci | ... | special effects |
Camera and Electrical Department
| Giovanni Canfarelli Modica | ... | assistant camera (as Gianni Modica) |
| Emilio Varriano | ... | camera operator |
Additional Crew
| Alfredo Leone | ... | presenter (as Alfred Leone) |
| Fiorella Betti | ... | voice dubbing: Sylva Koscina (uncredited) |
| Luciano De Ambrosis | ... | voice dubbing: Gabriele Tinti (uncredited) |
| Arturo Dominici | ... | voice dubbing: Eduardo Fajardo (uncredited) |
| Vittoria Febbi | ... | voice dubbing: Elke Sommer (uncredited) |
| Sergio Graziani | ... | voice dubbing: Espartaco Santoni (uncredited) |
| Anthony La Penna | ... | voice dubbing (english version) (uncredited) |
| Pino Locchi | ... | voice dubbing: Telly Savalas (uncredited) |
| Massimo Turci | ... | voice dubbing: Alessio Orano (uncredited) |
