Directed by
| León Klimovsky | ... | (as Leon Klimovsky) |
| Enzo G. Castellari | ... | (uncredited) |
Writing Credits
| Manuel Sebares | ... | (story) & |
| Tito Carpi | ... | (story) |
| Manuel Sebares | ... | (screenplay) & |
| Tito Carpi | ... | (screenplay) |
Cast (in credits order)
| Anthony Steffen | ... | Regan (as Antony Steffen) | |
 |
Gloria Osuna | ... | Sally Norton |
| Ennio Girolami | ... | Sam Lister (as Thomas Moore) | |
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Joe Kamel | ... | Graham |
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Alfonso Rojas | ... | Amos Brownsberg |
| Ángel Ter | ... | Judge Horace Holden (as Angel Ter) | |
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José Luis Lluch | ... | Buck Dago (as Jose Luis Lluch) |
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José Luis Zalde | ... | Mayor Fisher (as Tomas Zalde) |
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Sandalio Hernández | ... | Deputy Smitty (as Sandalio Hernandez) |
| Frank Wolff | ... | Jim Norton / Trevor Norton | |
| Rest of cast listed alphabetically: | |||
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Chiro Bermejo | ... | Barman (uncredited) |
| Enzo G. Castellari | ... | First Intruder (uncredited) | |
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Gonzalo de Esquiroz | ... | (uncredited) |
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Alfonso de la Vega | ... | Buckely (uncredited) |
| Félix Fernández | ... | (uncredited) | |
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Ángel Menéndez | ... | Carson (uncredited) |
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Joaquín Parra | ... | Freeman (uncredited) |
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José Villasante | ... | (uncredited) |
Produced by
| Rafael Marina | ... | executive producer |
Music by
| Carlo Savina | ||
Cinematography by
| Aldo Pinelli | ... | director of photography (as Aldo Pennelli) |
Editing by
| Antonio Gimeno | ||
Art Direction by
| Saverio D'Eugenio | ||
Set Decoration by
| Antonio Fratalocchi | ... | (as Tonino Fratalocchi) |
| Augusto Lega | ||
Makeup Department
| Ivana Bernardi | ... | hair stylist |
| Carola Sesé | ... | hair stylist |
| Vittorio Biseo | ... | makeup artist (uncredited) |
| Vicente Vázquez | ... | makeup artist (uncredited) |
Production Management
| Marino Girolami | ... | organization |
| José Sánchez | ... | production supervisor (uncredited) |
Second Unit Director or Assistant Director
| Mariano Canales | ... | assistant director |
| Enzo G. Castellari | ... | assistant director (as Enzo Girolami) |
Art Department
| Renato Casaro | ... | poster designer (uncredited) |
Sound Department
| Giuseppe Mangione | ... | sound engineer |
| Augusto Troiani | ... | boom operator |
Special Effects by
| Manuel Baquero | ... | special effects |
Camera and Electrical Department
| Alberto Di Battista | ... | assistant camera |
| Tomás Fernández | ... | second camera operator |
| Pablo Ripoll | ... | camera operator |
| Umberto Dessena | ... | grip (uncredited) |
Music Department
| Carlo Savina | ... | musical director |
Script and Continuity Department
| Alberto Montaña | ... | continuity (as Alberto Montana) |
| Maria Pia Rocco | ... | continuity |
Additional Crew
| Francesco Orefici | ... | production secretary |
| José Salcedo | ... | production assistant |
| Vittorio Tintari | ... | production secretary |
| Antonio Zamora | ... | production secretary |
| Emilio Cigoli | ... | voice dubbing: Frank Wolff (uncredited) |
| Geoffrey Copleston | ... | voice dubbing: Ángel Ter (english version) (uncredited) |
| Giancarlo Maestri | ... | voice dubbing: Anthony Steffen (uncredited) |
