Directed by
| José María Elorrieta | ... | (as José Mª Elorrieta) |
Writing Credits
| Fermín Sandoval | ... | (screenplay) & |
| José María Elorrieta | ... | (screenplay) (as José Mª Elorrieta) & |
| Enrique González Macho | ... | (screenplay) (as Enrique G. Macho) |
Cast (in credits order)
 |
Diana Sorel | ... | Dra. Greta Materlick |
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Nicholas Ney | ... | Karl von Rysselberg |
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Inés Morales | ... | Veronica (as Inés Skorpio) |
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Loreta Tovar | ... | Margaret (as Loretta Martin) |
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Beatriz Elorrieta | ... | Erica Rosenberg (as Beatriz Lacy) |
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José Villasante | ... | Otto |
| Rosario Royo | ... | Ama de llaves | |
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Rafael Vaquero | ... | Alcalde Christopher Roland (as Rafael Bakero) |
| Susan Taff | ... | Brenda | |
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María Luisa Tovar | ... | Marisa (as Marisa Tobar) |
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Francisco Bonmatí | ... | Ciclista |
| Antonio Jiménez Escribano | ... | Barón von Rysselberg (as Antonio Giménez Escribano) | |
| Rest of cast listed alphabetically: | |||
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Jesús Alesanco | ... | (uncredited) |
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Francisco Correa | ... | (uncredited) |
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Ricardo Vázquez | ... | Vampiro de las ruinas (uncredited) |
Produced by
| Ricardo Vázquez | ... | executive producer |
Music by
| Peppino De Luca | ... | (as G. de Luca) |
| Vittorio Gelmetti | ... | (as V. Gelmetti) |
| Angelo Francesco Lavagnino | ... | (as A.F. Lavagnino) |
| Stefano Torossi | ... | (as S. Torossi) |
Cinematography by
| Juan Ruiz Romero | ... | director of photography (as Juan Ruiz) |
Editing by
| María Luisa Soriano | ... | (as Maruja Soriano) |
Makeup Department
| Adela del Pino | ... | key makeup artist |
| José Luis Vázquez | ... | assistant makeup artist |
Production Management
| Rafael Marina | ... | production manager |
Second Unit Director or Assistant Director
| Enrique Pérez de Gomara | ... | assistant director |
| Ricardo Vázquez del Pino | ... | second assistant director |
Art Department
| Ángel Celdrán | ... | property master |
Special Effects by
| Antonio Molina | ... | special effects |
Camera and Electrical Department
| José Fernández | ... | second operator |
| Francisco Frutos | ... | still photographer |
| Joaquín Mazón | ... | focus puller |
Costume and Wardrobe Department
| María Luisa Bernedo | ... | seamstress |
Editorial Department
| Mary Xaire | ... | assistant editor (as Maria del Socorro Xaire) |
Script and Continuity Department
| Enrique Palacios | ... | script supervisor |
Additional Crew
| Ángel Alonso | ... | production assistant |
| Francisco Arenzana | ... | voice dubbing (uncredited) |
| Salvador Arias | ... | voice dubbing: Antonio Jiménez Escribano (uncredited) |
| Héctor Cantolla | ... | voice dubbing: various (uncredited) |
| Lola Cervantes | ... | voice dubbing: Diana Sorel (uncredited) |
| Luis María Lasala | ... | voice dubbing (uncredited) |
| Delia Luna | ... | voice dubbing: Susan Taff (uncredited) |
| José Martínez Blanco | ... | voice dubbing: various (uncredited) |
| José Moratalla | ... | voice dubbing: Nicholas Ney (uncredited) |
| María Luisa Rubio | ... | voice dubbing: Beatriz Elorrieta (uncredited) |
| Mayte Santamarina | ... | voice dubbing: Inés Morales (uncredited) |
| Selica Torcal | ... | voice dubbing: María Luisa Tovar (uncredited) |
