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.
| Actor | Role |
|---|---|
 James GarnerMarshal Wyatt Earp | Marshal Wyatt Earp |
 Jason RobardsDoc Holliday | Doc Holliday |
 Robert RyanIke Clanton | Ike Clanton |
 Albert SalmiOctavius Roy | Octavius Roy |
 Charles AidmanHorace Sullivan | Horace Sullivan |
 Steve IhnatAndy Warshaw | Andy Warshaw |
 Michael TolanPete Spence | Pete Spence |
 William WindomTexas Jack Vermillion | Texas Jack Vermillion |
 Lonny ChapmanTurkey Creek Johnson | Turkey Creek Johnson |
 Larry GatesJohn P. Clum | John P. Clum |
 William SchallertJudge Herman Spicer | Judge Herman Spicer |
 Karl SwensonDr. Charles Goodfellow | Dr. Charles Goodfellow |
 Monte MarkhamTucson Sheriff Sherman McMasters | Tucson Sheriff Sherman McMasters |
 Jon VoightCurly Bill Brocius | Curly Bill Brocius |
| BBill FletcherJimmy Bryan | Jimmy Bryan |
 Austin WillisAnson Safford | Anson Safford |
 Richard BullThomas Fitch | Thomas Fitch |
 Sam MelvilleMorgan Earp | Morgan Earp |
 Frank ConverseVirgil Earp | Virgil Earp |
 Robert PhillipsFrank Stilwell | Frank Stilwell |
 Jorge RussekDeputy Latigo | Deputy Latigo |