Directed by
| Ramón Barco | ... | (as Ramón Barce) |
Writing Credits (in alphabetical order)
| Ramón Barco | ... | (as Ramón Barce) |
| Juan José Daza | ... | (story) |
| Paul Naschy | ... | (story) (as Jacinto Molina) |
| Juan José Porto | ... | (screenplay) |
| Juan José Porto | ... | (story) |
Cast (in credits order)
| Paul Naschy | ... | Gerard Roland | |
| Máximo Valverde | ... | Comisario Alain | |
 |
Renë D'Grie | ... | Bichaud |
| María Mahor | ... | Esposa de Montan | |
| Mirta Miller | ... | Esposa del comisario | |
| Blanca Estrada | ... | Michelle | |
|
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Rosa Valenty | ... | Elvire |
|
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Ramón Centenero | ... | Inspector Closseau |
| Mario Pardo | ... | Daniel | |
|
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Victoria Hernández | ... | Genevieve |
|
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Goyo Peralta | ... | Nino Lara |
| Antonio Gamero | ... | Encargado del local | |
| Paloma Cela | ... | Simone | |
|
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María Isabel Hidalgo | ||
|
|
Hugo Astar | ||
|
|
José María de Mera | ||
|
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Rosa Arenas | ||
| José María Prada | ... | Montan | |
| Rest of cast listed alphabetically: | |||
|
|
Damián Rabal | ||
Music by
| Ángel Arteaga | ||
Cinematography by
| Emilio Foriscot | ||
Editing by
| María Luisa Soriano | ||
Set Decoration by
| Ángel Arzuaga | ||
Makeup Department
| Fernando Florido | ... | makeup artist |
| Dolores García Rey | ... | assistant makeup artist |
Production Management
| Ángel Parrondo | ... | production manager |
Second Unit Director or Assistant Director
| Bernardo Fernández | ... | assistant director |
Camera and Electrical Department
| José F. Ariznavarreta | ... | second operator |
| Francisco Beringola | ... | assistant camera |
| Francisco Frutos | ... | still photographer |
Costume and Wardrobe Department
| Juana Ramírez | ... | seamstress |
Editorial Department
| Renata Merino | ... | assistant editor |
Additional Crew
| Blanca Astiasu | ... | shooting secretary |
| Salvador Casado | ... | production assistant |
| Ángel María Baltanás | ... | voice dubbing: Paul Naschy (uncredited) |
| Lola Cervantes | ... | voice dubbing: Rosa Valenty (uncredited) |
| Pilar Gentil | ... | voice dubbing: Victoria Hernández (uncredited) |
| José Guardiola | ... | voice dubbing: Goyo Peralta (uncredited) |
| Mari Ángeles Herranz | ... | voice dubbing: Mirta Miller (uncredited) |
| Teófilo Martínez | ... | voice dubbing: Renë D'Grie (uncredited) |
| Simón Ramírez | ... | voice dubbing: Máximo Valverde (uncredited) |
| Carlos Revilla | ... | voice dubbing: Ramón Centenero (uncredited) |
| María Luisa Rubio | ... | voice dubbing: María Mahor (uncredited) |
| Joaquín Vidriales | ... | voice dubbing: Antonio Gamero (uncredited) |
