At the behest of local revolutionaries, a mercenary enlists four specialists in various combat styles to help him rob a Mexican Army train carrying $500,000 in gold.
| Directing | Don Taylor | Director |
| Directing | Italo Zingarelli | Director |
| Writing | Dario Argento | Screenplay |
| Production | Italo Zingarelli | Producer |
| Sound | Ennio Morricone | Original Music Composer |
| Camera | Enzo Barboni | Director of Photography |
| Editing | Sergio Montanari | Editor |
| Art | Ennio Michettoni | Set Decoration |
| Costume & Make-Up | Luciano Sagoni | Costume Design |
| Production | Roberto Palaggi | Executive Producer |
| Costume & Make-Up | Massimo Giustini | Makeup Artist |
| Sound | Gianni D'Amico | Sound Mixer |
| Writing | Dario Argento | Story |
| Directing | Stefano Rolla | First Assistant Director |
| Camera | Sergio Bergamini | Camera Operator |
| Production | Luciano Pesciaroli | Unit Manager |
| Production | Ruggero Cappelli | Production Secretary |
| Directing | Maria Luisa Rosen | Script Supervisor |
| Sound | Eraldo Giordani | Sound |
| Costume & Make-Up | Salvatore Cotroneo | Hairstylist |
| Editing | Nadia Bonifazi | Assistant Editor |
| Crew | Sergio Chiusi | Special Effects |
| Art | Enzo Bulgarelli | Production Design |
| Sound | Bruno Nicolai | Conductor |
| Production | Franco Palaggi | Line Producer |
