Directed by
| Pedro Lazaga | ||
Writing Credits (in alphabetical order)
| Pedro Lazaga | ||
| Santiago Moncada | ... | (screenplay) |
| Santiago Moncada | ... | (story) |
Cast (in credits order)
| Analía Gadé | ... | Desirée Charrier | |
| Jean Sorel | ... | Teniente Barney Holmes | |
| Espartaco Santoni | ... | Dr. Javier Echevarría | |
| José Luis López Vázquez | ... | Terence | |
| Stephen Boyd | ... | León Urrutía, joyero | |
| Mabel Karr | ... | Madame Chantal | |
| Jorge Rigaud | ... | Mr. Stanley (as Jorge Rigeaut) | |
| Beni Deus | ... | Gaston (as Beny Deus) | |
| José Riesgo | ... | Capitán de Scotland Yard | |
 |
Ramón Ferrer | ||
| Eva León | ... | Enfermera | |
|
|
Rosanna Pardo | ... | (as Rosana Pardo) |
| Saturno Cerra | |||
|
|
Ernesto Vañes | ||
|
|
Antonio Orengo | ||
|
|
Melquiades Álvarez | ||
|
|
Francisco Agudín | ... | (as F. Agudín) |
| Rest of cast listed alphabetically: | |||
| Félix Acaso | ... | Mr. Decker (voice) (uncredited) | |
| Ángel Ter | ... | Voz del magnetofón (voice) (uncredited) | |
Produced by
| Espartaco Santoni | ... | executive producer |
Music by
| Jaime Pérez | ||
Cinematography by
| Francisco Sempere | ||
Editing by
| Juan Pisón | ||
Set Decoration by
| José Antonio de la Guerra | ||
Makeup Department
| Francisca Guillot | ... | hair stylist |
| Miguel Sesé | ... | makeup artist |
Production Management
| Gustavo Quintana | ... | production manager |
| José Villafranca | ... | production manager |
Second Unit Director or Assistant Director
| José Luis Pérez Tristán | ... | assistant director |
Art Department
| Jano | ... | poster artist |
| Manuel Rincón | ... | property master |
Camera and Electrical Department
| Francisco Beringola | ... | assistant camera |
| José García Galisteo | ... | second operator |
| José María Redal | ... | assistant camera |
| Julio Wizuete | ... | still photographer |
Script and Continuity Department
| Maribel Ruiz Capilla | ... | script supervisor |
Additional Crew
| Roberto Fandiño | ... | titles |
| Enrique González Macho | ... | production assistant |
| Matilde Conesa | ... | voice dubbing: Mabel Karr (uncredited) |
| Juan Miguel Cuesta | ... | voice dubbing: Espartaco Santoni (uncredited) |
| José Moratalla | ... | voice dubbing (uncredited) |
| Jesús Nieto | ... | voice dubbing: Jean Sorel (uncredited) |
| Fernando Nogueras | ... | voice dubbing (uncredited) |
| Julio Núñez | ... | voice dubbing (uncredited) |
| Claudio Rodríguez | ... | voice dubbing: Stephen Boyd (uncredited) |
| Joaquín Vidriales | ... | voice dubbing: George Rigaud (uncredited) |
