Directed by
| Riccardo Freda | ... | (as Robert Hampton) |
| Jorge Grau | ... | (uncredited) |
Writing Credits (in alphabetical order)
| Sandro Continenza | ... | (screenplay) (as Alessandro Continenza) |
| Sandro Continenza | ... | (story) (as Alessandro Continenza) |
| Riccardo Freda | ... | (screenplay) |
| Riccardo Freda | ... | (story) |
| Vittoriano Petrilli | ... | (screenplay) |
| Vittoriano Petrilli | ... | (story) |
| Paolo Spinola | ... | (screenplay) |
| Paolo Spinola | ... | (story) |
Cast (in credits order)
| Edmund Purdom | ... | John Milwood | |
| Geneviève Page | ... | Mary Bolevasco | |
| Gino Cervi | ... | Prof. Bolevasco | |
| José Guardiola | ... | Pistolero | |
| Félix Dafauce | ... | Inspector Mathias | |
| Antonio Molino Rojo | ... | Pérez (as Antonio Molino) | |
 |
Enrique Pelayo | ||
|
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Mario Moreno | ... | Chief of Police |
| Amparo Rivelles | ... | Lola | |
| Luis Peña | ... | González | |
| Rest of cast listed alphabetically: | |||
|
|
Félix Bafara | ... | (uncredited) |
|
|
Juan Olaguivel | ... | (uncredited) |
|
|
Alfonso Rojas | ... | (uncredited) |
Produced by
| Tonino Cervi | ... | producer (as Antonio Cervi) |
Music by
| Lelio Luttazzi | ||
Cinematography by
| Gábor Pogány | ||
| Francisco Sempere | ||
Editing by
| Nino Baragli | ||
| Margarita de Ochoa | ... | (as Margharita Ochoa) |
Production Design by
| José Algueró | ||
| Gil Parrondo | ||
Set Decoration by
| José Algueró | ||
| Gil Parrondo | ||
Makeup Department
| José Luis Ruiz | ... | hair stylist |
Production Management
| Rafael Carrillo | ... | unit manager |
| Emimmo Salvi | ... | production supervisor |
Second Unit Director or Assistant Director
| Alvaro Lanzoni | ... | second assistant director |
| Juan Serra | ... | assistant director |
| Paolo Spinola | ... | assistant director |
Art Department
| Luis Paton | ... | assistant production designer |
Sound Department
| Mario Amari | ... | sound |
Camera and Electrical Department
| Miguel Agudo | ... | camera operator |
| Alvaro Lanzoni | ... | assistant camera |
Editorial Department
| Alicia Santacana | ... | assistant editor |
Music Department
| Edward Brody | ... | composer: song "The Last Telephone Call" |
| Lelio Luttazzi | ... | conductor |
Additional Crew
| Rafael Carrillo | ... | production secretary |
| Rafael Crespo | ... | production secretary |
| Federico Vásquez | ... | assistant to director |
