Directed by
| Mario Bava | ||
Writing Credits
| Renato Pestriniero | ... | (story "One Night of 21 Hours") |
| Ib Melchior | ... | (screenplay) and |
| Alberto Bevilacqua | ... | (screenplay) and |
| Callisto Cosulich | ... | (screenplay) and |
| Mario Bava | ... | (screenplay) and |
| Antonio Román | ... | (screenplay) (as Antonio Roman) and |
| Rafael J. Salvia | ... | (screenplay) |
| Ib Melchior | ... | (screenplay) (English version) and |
| Louis M. Heyward | ... | (screenplay) (English version) |
| Ib Melchior | ... | (screen story) |
Cast (in credits order) complete, awaiting verification
| Barry Sullivan | ... | Capt. Mark Markary | |
| Norma Bengell | ... | Sanya | |
| Ángel Aranda | ... | Wess Wescant (as Angel Aranda) | |
| Evi Marandi | ... | Tiona | |
| Franco Andrei | ... | Bert / Garr | |
| Federico Boido | ... | Keir (as Rico Boido) | |
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Stelio Candelli | ... | Brad / Mud |
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Alberto Cevenini | ... | Toby Markary / Wan |
| Mario Morales | ... | Eldon | |
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Ivan Rassimov | ... | Carter / Dervy |
| Massimo Righi | ... | Capt. Sallas / Nordeg | |
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Fernando Villena | ... | Dr. Karan |
| Rest of cast listed alphabetically: | |||
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Vito Fasano | ... | Dead Galliott Crew Member (uncredited) |
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Giuseppe Mattei | ... | Brent (uncredited) |
Produced by
| Samuel Z. Arkoff | ... | executive producer |
| Salvatore Billitteri | ... | associate producer |
| Fulvio Lucisano | ... | producer |
| James H. Nicholson | ... | executive producer |
Music by
| Gino Marinuzzi Jr. | ||
Cinematography by
| Antonio Rinaldi | ... | director of photography |
| Mario Bava | ... | (uncredited) |
| Antonio Pérez Olea | ... | (uncredited) |
Editing by
| Romana Fortini | ||
| Antonio Gimeno | ||
Set Decoration by
| Giorgio Giovannini | ||
Costume Design by
| Gabriele Mayer | ||
Makeup Department
| Gabriella Borzelli | ... | hair stylist |
| Giancarlo Del Brocco | ... | assistant makeup artist |
| Amato Garbini | ... | head makeup artist |
Production Management
| Giancarlo Sambucini | ... | production director |
| Mario Silvestri | ... | production manager |
Second Unit Director or Assistant Director
| Serena Canevari | ... | assistant director |
| Manuel San Román | ... | assistant director (as Manuel San Roman) |
Art Department
| Giorgio Giovannini | ... | set designer |
| Emilio Zago | ... | assistant set designer |
Sound Department
| Eugenio Fiori | ... | boom operator |
| Paolo Ketoff | ... | electronic effects |
| Gino Marinuzzi Jr. | ... | electronic effects |
| Mario Ronchetti | ... | sound recordist |
| James Nelson | ... | supervising sound editor (uncredited) |
Special Effects by
| Mario Bava | ... | special effects (uncredited) |
| Carlo Rambaldi | ... | model maker (uncredited) |
Camera and Electrical Department
| Giorgio Aureli | ... | assistant camera |
| Saverio Diamante | ... | camera operator (as Saverio Diamanti) |
Music Department
| Gino Marinuzzi Jr. | ... | music instrumentation |
| Kendall Schmidt | ... | composer: US video release |
Script and Continuity Department
| Lucio Romeo | ... | script supervisor |
| Rosalba Scavia | ... | script supervisor |
Additional Crew
| Lamberto Bava | ... | assistant to director |
| Lucio Romeo | ... | production secretary |
| Giulio Bosetti | ... | voice dubbing: Massimo Righi (uncredited) |
| Jack Curtis | ... | voice dubbing: Massimo Righi (uncredited) |
| Carlo D'Angelo | ... | voice dubbing: Barry Sullivan (uncredited) |
| Peter Fernandez | ... | voice dubbing: Ángel Aranda (uncredited) |
| Gabriella Genta | ... | voice dubbing: Norma Bengell (uncredited) |
| Joyce Gordon | ... | voice dubbing: Norma Bengell (uncredited) |
| Bernie Grant | ... | voice dubbing: Fernando Villena (uncredited) |
| Giancarlo Maestri | ... | voice dubbing: Mario Morales (uncredited) |
| Michele Malaspina | ... | voice dubbing: Fernando Villena (uncredited) |
| Gianni Musy | ... | voice dubbing: Franco Andrei (uncredited) |
| Renzo Palmer | ... | voice dubbing: Stelio Candelli (uncredited) |
