Directed by
| Alberto De Martino | ||
| Sergio Grieco | ... | (as Terence Hathaway) |
Writing Credits
| Sandro Continenza | ... | (screenplay) & |
| Marcello Coscia | ... | (screenplay) & |
| Hipólito de Diego | ... | (screenplay) and |
| Sandro Continenza | ... | (story) & |
| Marcello Coscia | ... | (story) & |
| Hipólito de Diego | ... | (story) (as Hipólito de Diego López) & |
| Giovanni Simonelli | ... | (story) |
Cast (in credits order) verified as complete
| Ken Clark | ... | Dick Malloy | |
| Daniela Bianchi | ... | Lady Arabella Chaplin | |
| Helga Liné | ... | Hilde | |
| Jacques Bergerac | ... | Kobre Zoltan | |
| Mabel Karr | ... | Jacqueline | |
| Alfredo Mayo | ... | Sir Hillary | |
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Philippe Hersent | ... | Heston |
| Ida Galli | ... | Constance Day (as Evelyn Stewart) | |
| Tomás Blanco | ... | Commissario Soler | |
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José Panizo | ||
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Peter Blades | ... | Ivan |
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Rafael Albaicín | ... | Rodriguez - the false monk |
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Raymond Jourdan | ... | Scientist |
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Alberto Cevenini | ... | English soldier |
| Rest of cast listed alphabetically: | |||
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Silvana Bacci | ... | Congress Attendee (uncredited) |
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Agustín Bescos | ... | Birthday Party Guest (uncredited) |
| Rufino Inglés | ... | Doctor (uncredited) | |
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Álvaro Marenco | ... | Attendant (uncredited) |
Produced by
| Edmondo Amati | ... | producer |
| Jacques Roitfeld | ... | producer |
Music by
| Bruno Nicolai | ||
| Giovanni Simonelli | ... | (as Simonelli) |
Cinematography by
| Federico G. Larraya | ||
| Alejandro Ulloa | ||
Editing by
| Otello Colangeli | ||
Art Direction by
| Nedo Azzini | ||
Set Decoration by
| Ramiro Gómez | ||
Costume Design by
| Federico Forquet | ||
| Gaia Romanini | ||
Makeup Department
| Giancarlo De Leonardis | ... | key hair stylist |
| Romolo de Martino | ... | makeup artist |
Production Management
| Maurizio Amati | ... | unit production manager |
| Salvador Ginés | ... | unit production manager |
| Mario Mariani | ... | production manager |
| Michel Mombailly | ... | production manager |
| Antonio Montoya | ... | unit production manager |
| Manuel Pérez | ... | production manager |
Second Unit Director or Assistant Director
| Francisco Ariza | ... | assistant director |
| Enzo G. Castellari | ... | assistant director (as Enzo Girolami) |
Sound Department
| Umberto Picistrelli | ... | sound engineer |
Special Effects by
| Manuel Baquero | ... | special effects |
Visual Effects by
| Emilio Ruiz del Río | ... | miniatures |
Stunts
| Enzo G. Castellari | ... | master of arms (as Enzo Girolami) |
| Enzo Musumeci Greco | ... | master of arms |
| Giorgio Ubaldi | ... | master of arms |
Camera and Electrical Department
| Giovanni Bergamini | ... | assistant camera (as Gianni Bergamini) |
| Mario Fioretti | ... | camera operator / director of photography: second unit |
Editorial Department
| Maria Napoli | ... | assistant editor |
Music Department
| Bruno Nicolai | ... | conductor |
Script and Continuity Department
| Maria Pia Rocco | ... | script supervisor |
Additional Crew
| Juan Casado | ... | production runner |
| Francisco Escobar | ... | production assistant |
| Agostino Pane | ... | production assistant |
| Emilio Ruiz del Río | ... | miniatures (as Emilio G. Ruiz) |
| Fiorella Betti | ... | voice dubbing: Mabel Karr (uncredited) |
| Gianni Bonagura | ... | voice dubbing: Philippe Hersent (uncredited) |
| Rosetta Calavetta | ... | voice dubbing: Helga Liné (uncredited) |
| Maria Pia Di Meo | ... | voice dubbing: Daniela Bianchi (uncredited) |
| Sergio Graziani | ... | voice dubbing: Alfredo Mayo (uncredited) |
| Pino Locchi | ... | voice dubbing: Ken Clark (uncredited) |
| Bruno Persa | ... | voice dubbing: Tomás Blanco (uncredited) |
| Giuseppe Rinaldi | ... | voice dubbing: Jacques Bergerac (uncredited) |
| Rita Savagnone | ... | voice dubbing: Evelyn Stewart (uncredited) |
| Massimo Turci | ... | voice dubbing: Alberto Ceverini (uncredited) |
