A stranger from Boston offers a notorious Arizona outlaw a job he can’t refuse.
| Directing | Ramón Torrado | Director |
| Writing | Luis Gaspar | Writer |
| Writing | Antonio Jiménez Escribano | Screenplay |
| Production | Arturo González | Executive Producer |
| Production | José Luis Jerez | Line Producer |
| Sound | Daniel Montorio | Music |
| Camera | Ricardo Torres | Director of Photography |
| Editing | Gaby Peñalba | Editor |
| Art | Augusto Lega | Set Decoration |
| Costume & Make-Up | Juan Farsac | Makeup Artist |
| Costume & Make-Up | María Luisa López | Assistant Makeup Artist |
| Costume & Make-Up | Isabel Mellado | Hairstylist |
| Production | José Frade | Production Manager |
| Production | Luis Méndez | Production Manager |
| Directing | Joaquín Vera | Assistant Director |
| Art | Manuel Amigo | Property Master |
| Sound | José Luis Arias | Sound Engineer |
| Sound | Jesús Jiménez | Sound Engineer |
| Crew | Manuel Baquero | Special Effects |
| Crew | José Luis Chinchilla | Stunt Coordinator |
| Camera | César Benítez | Still Photographer |
| Camera | Ricardo González | Camera Operator |
| Camera | Ramón Fernández Prestamero | Assistant Camera |
| Directing | Carmen Robledo | Script Supervisor |
| Production | Francisco Pol | Production Assistant |
| Production | Jesús Rancaño | Production Assistant |
| Editing | María Carmen Ripoll | Assistant Editor |