Directed by
| Jesús Franco | ... | (as Jess Franco) |
Writing Credits
| Jesús Franco | ... | (screenplay) (as Jess Franco) |
| Erwin C. Dietrich | ... | (uncredited) |
Cast (in credits order) complete, awaiting verification
| Dyanne Thorne | ... | Greta | |
| Lina Romay | ... | Juana | |
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Angela Ritschard | ... | Rosa Phillips |
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Peggy Markoff | ... | No. 14 |
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Esther Studer | ... | No. 24 |
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Howard Maurer | ... | Governor |
| Eric Falk | ... | Pablo Rego | |
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Tania Busselier | ... | Aby |
| Rest of cast listed alphabetically: | |||
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Sandra L. Brennan | ... | (uncredited) |
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Lorli Bucher | ... | Wardress (uncredited) |
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Dagmar Bürger | ... | No. 9 (uncredited) |
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Pilar Coll | ... | No. 20 (uncredited) |
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Alex Exler | ... | (uncredited) |
| Jesús Franco | ... | Dr. Milton Arcos (uncredited) | |
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Karl Gysling | ... | Prisoner (uncredited) |
| Roman Huber | ... | Prisoner (uncredited) | |
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Mike Lederer | ... | Prisoner (uncredited) |
| Esther Moser | ... | No. 18 (uncredited) | |
Produced by
| Erwin C. Dietrich | ... | producer |
Music by
| Walter Baumgartner | ... | (uncredited) |
Cinematography by
| Ruedi Küttel | ... | (as Rudolf Küttel) |
Production Management
| Max Dora | ... | production manager |
