| Actor | Fred Williams* (as Inspector Thomas), Jack Taylor (as Farkas), Roberto Camardiel (as Carlos), Siegfried Lowitz (as Dr. Orloff), Moisès Augusto Rocha (as Andros), Gustavo Re (as Melou), Angel Menéndez* (as Prof. Parkinson), Friedrich Joloff (as Hermann), Jesús Franco (as Drunk Man), Guillermo Méndez (as CIA Agent), Wolfgang Kieling, Manuel Merino (as Marx) |
| Actress | Ewa Strömberg (as Jenny Hering), Eva Garden (as Wanda Orloff), Beni Cardoso (as Leslie), Monica Swinn |
| Director | Jesús Franco |
| Music | Jesús Franco |
| Producer | Jesús Franco |
| Story | Artur Brauner, Jesús Franco |
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