De voormalige scout Jess Remsberg redt de jonge Ellen Grange uit handen van vijandige Apachen. Hij brengt haar vervolgens terug naar haar man Willard Grange, die echter meer belang blijkt te hechten aan zijn paarden dan zijn vrouw. Bij thuiskomst ontdekt Jess dat zijn eigen vrouw, een Comanche, door onbekenden is vermoord.
Nee, helaas is Duel at Diablo nog niet beschikbaar op Netflix in Nederland.
| Directing | Ralph Nelson | Director |
| Writing | Marvin H. Albert | Novel |
| Production | Fred Engel | Producer |
| Production | Ralph Nelson | Producer |
| Sound | Neal Hefti | Original Music Composer |
| Camera | Charles F. Wheeler | Director of Photography |
| Editing | Fredric Steinkamp | Editor |
| Art | Alfred Ybarra | Art Direction |
| Art | Victor A. Gangelin | Set Decoration |
| Writing | Michael M. Grilikhes | Screenplay |
| Costume & Make-Up | Yvonne Wood | Costume Design |
| Costume & Make-Up | Gustaf Norin | Makeup Artist |
| Production | J. Paul Popkin | Production Supervisor |
| Directing | Phil Cook | Assistant Director |
| Directing | Emmett Emerson | Assistant Director |
| Crew | Roscoe Cline | Special Effects |
| Editing | Allan Jacobs | Assistant Editor |
| Sound | Richard Carruth | Music Editor |
| Costume & Make-Up | Eddie Armand | Wardrobe Designer |
| Crew | Al Wyatt Sr. | Stunt Coordinator |
| Production | James Garner | Producer |
| Crew | Bobby Somers | Stunts |
| Writing | Marvin H. Albert | Screenplay |
| Sound | Jerry Whittington | Sound Effects Editor |
| Crew | Roydon Clark | Stunts |
| Crew | John Daheim | Stunts |
| Crew | Steve DeFrance | Stunts |
| Crew | Richard Farnsworth | Stunts |
| Crew | Joe Finnegan | Stunts |
| Crew | Bill Hart | Stunts |
| Crew | Leroy Johnson | Stunts |
| Crew | Boyd 'Red' Morgan | Stunts |
| Crew | Glenn Randall Jr. | Stunts |
| Crew | Bobby Somers | Stunt Double |
| Crew | Neil Summers | Stunts |
| Crew | Rodd Wolff | Stunts |
