Directed by
| Umberto Lenzi | ||
Writing Credits
| Marcello Coscia | ... | (story) and |
| Rafael Romero Marchent | ... | (story) |
| Marcello Coscia | ... | (screenplay) and |
| Bruno Di Geronimo | ... | (screenplay) and |
| Rafael Romero Marchent | ... | (screenplay) and |
| Marie Claire Solleville | ... | (screenplay) |
Cast (in credits order) complete, awaiting verification
| Carroll Baker | ... | Helen | |
| Jean Sorel | ... | Maurice Sauvage | |
| Luis Dávila | ... | Albert Duchamps (as Luis Davila) | |
| Alberto Dalbés | ... | Dr. Harry Webb | |
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Marina Coffa | ... | Susan Sauvage |
| Anna Proclemer | ... | Constance Sauvage | |
| Hugo Blanco | |||
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Lisa Halvorsen | ... | Solange (as Liz Halvorsen) |
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Manuel Díaz Velasco | ... | Miguel |
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Jacques Stany | ... | James |
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Rossana Rovere | ... | Nurse |
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Calisto Calisti | ... | Doctor |
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Alfonso de la Vega | ... | Chauffeur |
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Miguel Beltrán | ||
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Gaspar Forteza | ... | 1st Cop |
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Francesco Narducci | ... | 2nd Cop (as Franco Narducci) |
Produced by
| Bruno Bolognesi | ... | executive producer |
Music by
| Gregorio García Segura | ... | (as Gregorio Garcia Segura) |
| Nino Rota | ... | (uncredited) |
Cinematography by
| Guglielmo Mancori | ... | director of photography |
Editing by
| Enzo Alabiso | ||
| Antonio Ramírez de Loaysa | ... | (as Antonio Ramírez) |
| Stanley Frazen | ... | (uncredited) |
Production Design by
| Franco Bottari | ||
Art Direction by
| Wolfgang Burmann | ... | (as W. Burman) |
Set Decoration by
| Franco Bottari | ||
Costume Design by
| Giovanni Naitano | ... | (as Giovanni Naitana) |
Makeup Department
| Mario Van Riel | ... | makeup artist |
Production Management
| Mario Alabiso | ... | unit production manager |
| Francisco Lara Polop | ... | production manager |
| Averoe Stefani | ... | production manager |
Second Unit Director or Assistant Director
| Fulvio Barresi | ... | assistant director |
| R. Marcilly | ... | assistant director |
Art Department
| Donato Ventrella | ... | assistant art director (as Ventrella Donato Antonio) |
Sound Department
| Raffaele Benedetti | ... | sound technician |
| Angelo Curi | ... | sound editor |
| Carlo Diotallevi | ... | sound |
| Angelo Spadoni | ... | sound |
| Romano Pampaloni | ... | sound (uncredited) |
Camera and Electrical Department
| Joe D'Amato | ... | camera operator (as Aristide Massaccesi) |
Music Department
| Piero Umiliani | ... | conductor |
Script and Continuity Department
| María Luz Manzano | ... | script supervisor (as Mariluz Manzano) |
Additional Crew
| Lamberto Andreani | ... | production secretary |
| Carlo Alighiero | ... | voice dubbing: Jacques Stany (uncredited) |
| Cesare Barbetti | ... | voice dubbing: Jean Sorel (uncredited) |
| Luciano De Ambrosis | ... | voice dubbing: Hugo Blanco (uncredited) |
| Arturo Dominici | ... | voice dubbing: Calisto Calisti (uncredited) |
| Flaminia Jandolo | ... | voice dubbing: Lisa Halvorsen (uncredited) |
| Melina Martello | ... | voice dubbing: Marina Coffa (uncredited) |
| Anna Miserocchi | ... | voice dubbing: Anna Proclemer (uncredited) |
| Bruno Persa | ... | voice dubbing: Alberto Dalbés (uncredited) |
| Rita Savagnone | ... | voice dubbing: Carroll Baker (uncredited) |
| Renato Turi | ... | voice dubbing: Luis Dávila (uncredited) |