Directed by
| Jesús Franco | ||
Writing Credits (in alphabetical order)
| Jesús Franco | ... | (as James P. Johnson) |
| Edgar Allan Poe | ... | (story "The Cat and the Canary") |
| Edgar Wallace | ... | (uncredited) |
Cast (in credits order)
| Alberto Dalbés | ... | Major Oliver Brooks | |
 |
Evelyne Scott | ... | Lady Marta Tobias |
| William Berger | ... | Baron Simon Tobias | |
| Maribel Hidalgo | ... | Lady Cecilia Marian | |
| Lina Romay | ... | Rita Derian | |
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Vicente Roca | ... | Inspector Bore |
| Yelena Samarina | ... | Deborah Potts | |
| Antonio Mayans | ... | Alfred Marian | |
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Ángel Menéndez | ... | Lord Archibald Marian (as Ángel Meléndez) |
| Luis Barboo | ... | Rufus | |
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Swan Heinze | ... | Mairu |
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José María Palacios | ||
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P. Martínez | ||
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Eduardo Puceiro | ||
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Ricardo Vázquez | ||
| Jesús Franco | ... | Andy (as J. Franco) | |
| Rest of cast listed alphabetically: | |||
| Dan van Husen | ... | Albert Pagan (uncredited) | |
Produced by
| Arturo Marcos | ... | producer |
Music by
| Carlo Savina | ||
Cinematography by
| Javier Pérez Zofio | ||
Editing by
| Antonio Gimeno | ||
Makeup Department
| Adela del Pino | ... | makeup artist |
| Carmen Sánchez | ... | hair stylist |
Production Management
| Antonio Cervera | ... | production manager |
Second Unit Director or Assistant Director
| Ricardo Vázquez | ... | assistant director |
Art Department
| Andrés Santana | ... | property master |
Camera and Electrical Department
| Máximo López | ... | still photographer |
| Manuel Mateos | ... | assistant camera |
| Enrique Salete | ... | second operator |
Costume and Wardrobe Department
| Victoria Ayllón | ... | costumer |
Editorial Department
| Mercedes Gimeno | ... | assistant editor |
Additional Crew
| Luis F. Rodríguez | ... | production assistant |
| Matilde Conesa | ... | voice dubbing: Yelena Samarina (uncredited) |
| José Ángel de Juanes | ... | voice dubbing: Miguel Roca (uncredited) |
| Luis María Lasala | ... | voice dubbing: Luis Barboo (uncredited) |
| Delia Luna | ... | voice dubbing: Evelyne Scott (uncredited) |
| Fernando Mateo | ... | voice dubbing: William Berger (uncredited) |
| José Moratalla | ... | voice dubbing: Antonio Mayans (uncredited) |
| Eduardo Moreno | ... | voice dubbing (uncredited) |
| Jesús Nieto | ... | voice dubbing: Alberto Dalbés (uncredited) |
| Fernando Nogueras | ... | voice dubbing: Dan van Husen (uncredited) |
| Manuel Peiró | ... | voice dubbing (uncredited) |
| Antonio Requena | ... | voice dubbing (uncredited) |
| Mayte Santamarina | ... | voice dubbing: Maribel Hidalgo (uncredited) |
| Pedro Sempson | ... | voice dubbing: Jesús Franco/various (uncredited) |
| Ricardo Tundidor | ... | voice dubbing: Ángel Menéndez (uncredited) |
