Directed by
| Jorge Grau | ||
Writing Credits (in alphabetical order)
| Juan Cobos | ... | (uncredited) |
| Sandro Continenza | ||
| Marcello Coscia | ||
| Miguel Rubio | ... | (uncredited) |
Cast (in credits order) complete, awaiting verification
| Cristina Galbó | ... | Edna Simmonds (as Christine Galbo) | |
| Ray Lovelock | ... | George Meaning | |
| Arthur Kennedy | ... | The Inspector | |
 |
Aldo Massasso | ... | Detective Sgt. Kinsey |
|
|
Giorgio Trestini | ... | PC Craig |
|
|
Roberto Posse | ... | Benson |
| José Lifante | ... | Martin West (as Jose Ruiz Lifante) | |
| Jeannine Mestre | ... | Katie West | |
| Gengher Gatti | ... | Keith | |
| Fernando Hilbeck | ... | Guthrie Wilson | |
|
|
Vera Drudi | ... | Mary |
|
|
Vicente Vega | ... | Dr. Duffield |
|
|
Francisco Sanz | ... | Perkins |
|
|
Paul Benson | ... | Wood |
|
|
Anita Colby | ... | Nurse |
| Joaquín Hinojosa | ... | Autopsy Doctor | |
| Vito Salier | ... | Naked Man | |
| Isabel Mestres | ... | Telephonist | |
| Rest of cast listed alphabetically: | |||
|
|
John Blain | ... | Newsagent (uncredited) |
Produced by
| Edmondo Amati | ... | producer |
| Manuel Pérez | ... | executive producer |
Music by
| Giuliano Sorgini | ||
Cinematography by
| Francisco Sempere | ||
Editing by
| Domingo García | ||
| Vincenzo Tomassi | ||
Production Design by
| Carlo Leva | ||
Art Direction by
| Rafael Ferri | ||
Makeup Department
| Carboni | ... | wig maker |
| Giannetto De Rossi | ... | makeup artist |
| Rocchetti | ... | wig maker |
Production Management
| Felice D'Alisera | ... | production manager |
| Julio Parra | ... | unit manager |
| Giuliano Principato | ... | unit manager |
| Manuel Pérez | ... | production manager (as Manolo Pérez) |
Second Unit Director or Assistant Director
| Gianni Arduini | ... | assistant director (as Giovanni Arduini) |
Sound Department
| Nick Alexander | ... | dubbing editor |
| Antonio Cárdenas | ... | sound recordist |
Special Effects by
| Juan Antonio Balandín | ... | special effects |
| Luciano Byrd | ... | special effects (as Luciano Bird) |
Visual Effects by
| Giannetto De Rossi | ... | special optical effects |
Camera and Electrical Department
| Enzo Frattari | ... | camera operator |
| Ramón Sempere | ... | camera operator |
Costume and Wardrobe Department
| Carmen de la Casa | ... | seamstress |
Music Department
| Giuliano Sorgini | ... | conductor |
Script and Continuity Department
| Eva Del Castillo | ... | continuity |
Additional Crew
| Ferruccio Amendola | ... | voice dubbing: Giorgio Trestini |
| Cesare Barbetti | ... | voice dubbing: Ray Lovelock |
| Vittoria Febbi | ... | voice dubbing: Cristina Galbó |
| Sergio Fiorentini | ... | voice dubbing: Arthur Kennedy |
| Sergio Graziani | ... | voice dubbing: Vicente Vega |
| Julio Parra | ... | production supervisor |
| Francisco Arenzana | ... | voice dubbing: Francisco Sanz (uncredited) |
| Lola Cervantes | ... | voice dubbing: Anita Colby (uncredited) |
| Matilde Conesa | ... | voice dubbing: Jeannine Mestre (uncredited) |
| José Ángel de Juanes | ... | voice dubbing: José Lifante (uncredited) |
| Juana Ginzo | ... | voice dubbing (uncredited) |
| Luis María Lasala | ... | voice dubbing (uncredited) |
| Delia Luna | ... | voice dubbing: Cristina Galbó (uncredited) |
| Fernando Mateo | ... | voice dubbing (uncredited) |
| José Moratalla | ... | voice dubbing: Giorgio Trestini (uncredited) |
| Eduardo Moreno | ... | voice dubbing: Paul Benson (uncredited) |
| Jesús Nieto | ... | voice dubbing: Ray Lovelock (uncredited) |
| Fernando Nogueras | ... | voice dubbing (uncredited) |
| Manuel Peiró | ... | voice dubbing (uncredited) |
| Víctor Ramírez | ... | voice dubbing (uncredited) |
| Pedro Sempson | ... | voice dubbing: Arthur Kennedy (uncredited) |
| John Steiner | ... | voice dubbing: Ray Lovelock (english version) (uncredited) |
| Luis Varela | ... | voice dubbing: Aldo Massasso/various (uncredited) |
| José Luis Yzaguirre | ... | voice dubbing (uncredited) |
