Directed by
| Jesús Franco | ... | (as Jess Franco) |
Writing Credits (in alphabetical order)
| Jesús Franco | ... | (adaptation) (as J. Franco) |
| Jesús Franco | ... | (screenplay) (as J. Franco) |
| Jesús Franco | ... | (writer) |
| Josyane Gibert | ... | (dialogue) (French version) (as Josiane Gibert) |
| Josyane Gibert | ... | (writer) |
| Stephen G. Horatio | ... | (story) (uncredited) |
Cast (in credits order) complete, awaiting verification
| Diana Lorys | ... | Anna de Istria | |
| Paul Muller | ... | Dr. Paul Lucas | |
| Jack Taylor | ... | Cynthia's Lover | |
 |
Colette Jack | ... | Cynthia Robins |
|
|
Andrea Montchal | ... | The Neighbour (as André Montchall) |
| Soledad Miranda | ... | Neighbour's Girlfriend (as Susan Korda) | |
| Rest of cast listed alphabetically: | |||
| Bob Buchholz | ... | Cynthia's Lover (voice) | |
| Dorothy Elias-Fahn | ... | Cynthia Robins (voice) | |
| Grant George | ... | The Neighbour (voice) | |
| Dave Mallow | ... | Dr. Paul Lucas (voice) | |
| Cindy Robinson | ... | Anna de Istria (voice) | |
| Philece Sampler | ... | Neighbour's Girlfriend (voice) | |
Produced by
| Robert de Nesle | ... | associate producer (uncredited) |
| Jesús Franco | ... | producer |
| Karl Heinz Mannchen | ... | producer (uncredited) |
Music by
| Bruno Nicolai | ||
Cinematography by
| José Climent | ... | director of photography (as J. Climent) |
| Manuel Merino | ... | (uncredited) |
Editing by
| Nadia | ||
Additional Crew
| Andrew P. Kirkham | ... | dvd producer [gb] |