Directed by
| Rafael Romero Marchent | ||
Writing Credits (in alphabetical order)
| Paul Naschy | ... | (story and screenplay) (as Jacinto Molina) |
| Nivan O. Taylor | ... | (in Portuguese sources) |
| Antonio Vilar | ... | (screenplay) |
| Antonio Vilar | ... | (story) |
Cast (in credits order) complete, awaiting verification
| Antonio Vilar | ... | Enrique | |
| Mara Cruz | ... | Olga | |
| Hugo Blanco | ... | Jorge | |
| Carlos Romero Marchent | ... | Luis | |
 |
María Elena Arpón | ... | Mónica (as Helen Harp) |
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Rebeca Reyes | ... | Erika (as Rebeca Montgomery) |
| María Kosty | ... | Helen | |
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Ramón Centenero | ... | Quinis |
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Luís Tito | ||
| Beni Deus | ... | Comisario | |
| Eduardo Calvo | ... | Sandro | |
| Madalena Sotto | ... | Vera (as Magdalena de Soto) | |
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Carlos José Teixeira | ... | Pratas |
| Antonio Casas | ... | Don Ricardo | |
| Paul Naschy | ... | Sergio Meleter | |
| Rest of cast listed alphabetically: | |||
|
|
Victor de Sousa | ... | Boy at the nightclub (uncredited) |
Produced by
| Antonio Vilar | ... | producer |
Music by
| Antón García Abril | ||
Cinematography by
| Miguel Fernández Mila | ||
Editing by
| José Antonio Rojo | ||
Costume Design by
| Celestina Per | ||
Sound Department
| Luís Barão | ... | sound |
Camera and Electrical Department
| João Moreira | ... | second cinematographer: portuguese sources |
Music Department
| Francisco Carvalhinho | ... | musician: guitar |
Additional Crew
| Félix Acaso | ... | voice dubbing: Ramón Centenero (uncredited) |
| Ángel María Baltanás | ... | voice dubbing (uncredited) |
| Maripe Castro | ... | voice dubbing: Rebeca Reyes (uncredited) |
| José María del Río | ... | voice dubbing (uncredited) |
| Javier Dotú | ... | voice dubbing: Hugo Blanco (uncredited) |
| Pilar Gentil | ... | voice dubbing (uncredited) |
| Ángela González | ... | voice dubbing: María Elena Arpón (uncredited) |
| José Guardiola | ... | voice dubbing: Paul Naschy (uncredited) |
| Fernando Mateo | ... | voice dubbing: Beni Deus (uncredited) |
| Julio Núñez | ... | voice dubbing: José Carlos Teixeira (uncredited) |
| Manuel Peiró | ... | voice dubbing (uncredited) |
| Claudio Rodríguez | ... | voice dubbing: Antonio Vilar (uncredited) |
| Rafael Romero Marchent | ... | voice dubbing (uncredited) |
