Directed by
| Fernando Di Leo | ||
Writing Credits
| Fernando Di Leo | ... | (story) & |
| Nino Latino | ... | (story) |
| Fernando Di Leo | ... | (screenplay) & |
| Nino Latino | ... | (screenplay) |
Cast (in credits order) complete, awaiting verification
| Klaus Kinski | ... | Dr. Francis Clay | |
| Margaret Lee | ... | Cheryl Hume | |
| Rosalba Neri | ... | Anne Palmieri | |
| Jane Garret | ... | Mara | |
| John Karlsen | ... | Professor Osterman | |
| Gioia Desideri | ... | Ruth | |
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Giangiacomo Elia | ... | The Gardener (as John Ely) |
| Fernando Cerulli | ... | Augusto | |
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Sandro Rossi | ... | Policeman |
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Giulio Baraghini | ... | Policeman |
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Ettore Geri | ... | Inspector |
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Antonio Radaelli | ... | Policeman |
| Monica Strebel | ... | Nurse Helen | |
| Carla Mancini | ... | Nurse | |
| Franco Marletta | ... | Male Nurse | |
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Piero Nistri | ... | Cheryl's Husband |
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Daniela Di Bitonto | ... | Patient |
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Enzo Spitaleri | ... | Ruth's Husband |
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Marco Mariani | ... | Male Nurse |
| Gilberto Galimberti | ... | Policeman | |
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Rosanna Braida | ... | Patient |
| Rest of cast listed alphabetically: | |||
| Lina Franchi | ... | Nurse Killed with Scythe (uncredited) | |
Produced by
| Tiziano Longo | ... | producer |
| Armando Novelli | ... | producer |
Music by
| Silvano Spadaccino | ||
Cinematography by
| Franco Villa | ... | director of photography |
Editing by
| Amedeo Giomini | ||
Set Decoration by
| Teresa Ferrone | ||
| Nicola Tamburo | ... | (as Nicola Tamburro) |
Makeup Department
| Antonio Mura | ... | makeup artist |
Production Management
| Alberto Longo | ... | production supervisor |
| Armando Novelli | ... | production manager |
| Francesco Vitulano | ... | unit manager |
Second Unit Director or Assistant Director
| Luca Damiano | ... | assistant director (as Franco Lo Cascio) |
Sound Department
| Raffaele Benedetti | ... | sound recordist |
| Romano Pampaloni | ... | sound recordist |
Stunts
| Gilberto Galimberti | ... | stunts (uncredited) |
Camera and Electrical Department
| Antonio De Castel Largo | ... | assistant camera |
| Antonio Minutolo | ... | assistant camera |
| Claudio Morabito | ... | camera operator |
Costume and Wardrobe Department
| Marcella Moretti | ... | wardrobe |
Music Department
| Giacomo Simonelli | ... | conductor |
Script and Continuity Department
| Silvia Petroni | ... | script supervisor (uncredited) |
Additional Crew
| Carolyn De Fonseca | ... | voice dubbing: Rosalba Neri (english version) (uncredited) |
| Gabriella Genta | ... | voice dubbing: Margaret Lee (uncredited) |
| Laura Gianoli | ... | voice dubbing: Gioia Desideri (uncredited) |
| Noemi Gifuni | ... | voice dubbing: Rosalba Neri (uncredited) |
| Alessandro Iovino | ... | voice dubbing: Piero Nistri (uncredited) |
| Mirella Pace | ... | voice dubbing: Jane Garret (uncredited) |
| Dario Penne | ... | voice dubbing: John Karlsen (uncredited) |
| Giorgio Piazza | ... | voice dubbing: Klaus Kinski (uncredited) |