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 | Michael M. Grilikhes | Screenplay |
| Writing | Marvin H. Albert | Novel |
| Camera | Charles F. Wheeler | Director of Photography |
| Editing | Fredric Steinkamp | Editor |
| Art | Victor A. Gangelin | Set Decoration |
| Sound | Neal Hefti | Original Music Composer |
| Production | Fred Engel | Producer |
| Art | Alfred Ybarra | Art Direction |
| Production | Ralph Nelson | Producer |
| Costume & Make-Up | Yvonne Wood | Costume Design |
| Costume & Make-Up | Gustaf Norin | Makeup Artist |
| Sound | Richard Carruth | Music Editor |
| Crew | Roscoe Cline | Special Effects |
| Production | J. Paul Popkin | Production Supervisor |
| Directing | Emmett Emerson | Assistant Director |
| Directing | Phil Cook | Assistant Director |
| Editing | Allan Jacobs | Assistant Editor |
| Costume & Make-Up | Eddie Armand | Wardrobe Designer |
| Crew | Al Wyatt Sr. | Stunt Coordinator |
| Production | James Garner | Producer |
| Crew | Bobby Somers | Stunts |
| Crew | Steve DeFrance | Stunts |
| Crew | Glenn Randall Jr. | Stunts |
| Writing | Marvin H. Albert | Screenplay |
| Crew | Neil Summers | Stunts |
| Crew | Rodd Wolff | Stunts |
| Crew | Roydon Clark | Stunts |
| Crew | Richard Farnsworth | Stunts |
| Crew | Boyd 'Red' Morgan | Stunts |
| Crew | John Daheim | Stunts |
| Crew | Leroy Johnson | Stunts |
| Crew | Bill Hart | Stunts |
| Crew | Joe Finnegan | Stunts |
| Crew | Bobby Somers | Stunt Double |
| Sound | Jerry Whittington | Sound Effects Editor |
