| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfonso Sánchez Tello | Crew | Production | Unit Production Manager |
Christine George | Crew | Costume & Make-Up | Hairstylist |
Conrad Hool | Crew | Production | Associate Producer |
Francisco Day | Crew | Production | Production Manager |
Gregg Landaker | Crew | Sound | Sound Mixer |
Howard Neiman | Crew | Sound | Sound Editor |
 J. Lee Thompson | Crew | Directing | Director |
Jack K. Tillar | Crew | Sound | Sound Editor |
Jaime Comas Gil | Crew | Writing | Story |
Jaime Pérez Cubero | Crew | Art | Set Decoration |
 Jerry Goldsmith | Crew | Sound | Original Music Composer |
Jesus G. Duran | Crew | Crew | Special Effects |
Joe DiBella | Crew | Costume & Make-Up | Makeup Artist |
Joseph C. Cavalier | Crew | Production | Production Manager |
José Rodríguez Granada | Crew | Art | Art Direction |
Lance Hool | Crew | Production | Producer |
Laurencio Cordero | Crew | Crew | Special Effects |
Michael F. Anderson | Crew | Editing | Editor |
Milton S. Gelman | Crew | Writing | Screenplay, Screenstory |
Morton S. Fine | Crew | Writing | Screenplay |
Paul Joseph | Crew | Production | Producer |
Robert J. Litt | Crew | Sound | Sound Recordist |
 Travilla | Crew | Costume & Make-Up | Costume Design |
Víctor Andrés Catena | Crew | Writing | Story |
Álex Phillips Jr. | Crew | Camera | Director of Photography |
 Jesús Marín | Crew | Directing | First Assistant Director |
Manuel Topete | Crew | Sound | Sound Mixer |
Jorge Morales | Crew | Art | Assistant Set Dresser |
Jorge Gómez | Crew | Sound | Boom Operator |
Antonio Mata | Crew | Art | Property Master |
Federico Serrano | Crew | Production | Assistant Unit Manager |
Efren Flores | Crew | Crew | Cableman |
Ricardo Arana | Crew | Art | Assistant Set Dresser |
Aurelio Ortiz | Crew | Production | Assistant Unit Manager |
Terence D. Buchinsky | Crew | Directing | Second Assistant Director |
James Granby Hunter | Crew | Writing | Screenstory |
Martin V. Smith | Crew | Production | Executive Producer |
Jorge De La Borbolla | Crew | Art | Set Dresser |
 Aldo Sambrell | Cast | Actor | Policeman |
 Ana De Sade | Cast | Actress | Rosa |
 Camilla Sparv | Cast | Actress | Hera |
Carlos Bravo y Fernández 'Carlhillos' | Cast | Actor | Sánchez (as Carlos Bravo) |
Carlos Romano | Cast | Actor | Miguel |
 Charles Bronson | Cast | Actor | Gifford Hoyt |
 Clifton James | Cast | Actor | Lorrimer |
Conrad Hool | Cast | British Crewman #1 (as Alan Conrad) | |
 Denny Miller | Cast | Actor | Horst |
 Dominique Sanda | Cast | Actress | Marie-Claire Allesandri |
 Fernando Rey | Cast | Actor | Police Captain Torredo |
 Gerardo Zepeda | Cast | Actor | Canero |
 Gilbert Roland | Cast | Actor | Dr. Rudolfo Ramirez |
 James Booth | Cast | Actor | John Baker |
 Jason Robards | Cast | Actor | Gunther Beckdorff |
 Jorge Russek | Cast | Actor | Provincial Minister |
 José Carlos Ruiz | Cast | Actor | Hernandez |
 José Chávez | Cast | Actor | Bustamante |
 Martin LaSalle | Cast | Actor | Aparicio |
 Pedro Damián | Cast | Actor | Eduardo |
 Simon MacCorkindale | Cast | Actor | Lewis Clarkson |
Stephen Peck | Cast | British Crewman #2 | |
Ernest Esparza III | Cast | Pepe | |
Manuel Martín | Cast | Inquest Clerk | |
| Person | Type | Job | Role(s) |
