Marshal Wyatt Earp kills a couple of men of the Clanton-gang in a fight. In revenge Clanton's thugs kill the marshal's brother. Thus, Wyatt Earp starts to chase the killers together with his friend Doc Holliday.
Unfortunately the movie Hour of the Gun is not yet available on HBO Max.
| Directing | John Sturges | Director |
| Writing | Edward Anhalt | Writer |
| Sound | Jerry Goldsmith | Original Music Composer |
| Art | Rafael Suárez | Set Decoration |
| Production | John Sturges | Producer |
| Camera | Lucien Ballard | Director of Photography |
| Editing | Ferris Webster | Editor |
| Art | Alfred Ybarra | Art Direction |
| Production | Lynn Stalmaster | Casting |
| Production | Allen K. Wood | Production Supervisor |
| Art | Joe LaBella | Property Master |
| Directing | Thomas J. Schmidt | Assistant Director |
| Sound | Jesús González Gancy | Sound |
| Directing | John Franco | Script Supervisor |
| Production | Nate H. Edwards | Production Manager |
| Crew | Sass Bedig | Special Effects |
| Sound | Richard Carruth | Music Editor |
| Sound | Frank E. Warner | Sound Effects Editor |
| Production | Jack Lacey | Unit Production Manager |
| Art | William Maldonado | Construction Coordinator |
| Editing | Jorge Azcárate | Assistant Editor |
| Costume & Make-Up | Charles Blackman | Makeup Artist |
