After Pat Garrett kills Billy the Kid, Billy's look-alike Roy Rogers arrives and is mistaken for him. Although a murderer, Billy was on the side of the homesteaders against the large ranchers. As Billy's death is unknown, Roy gets Garrett to let him pose as Billy to continue the fight, but without the killing.
| Actor | Role |
|---|---|
 Roy RogersRoy Rogers | Roy Rogers |
 Lynne RobertsEllen Moore (as Mary Hart) | Ellen Moore (as Mary Hart) |
 Smiley BurnetteFrog Millhouse | Frog Millhouse |
 Wade BotelerSheriff Pat Garrett | Sheriff Pat Garrett |
 Fred KohlerMatson | Matson |
 Morgan WallaceJ. B. Morganson | J. B. Morganson |
 Joseph CrehanU.S. Marshal Dave Conway | U.S. Marshal Dave Conway |
 Edwin StanleyNathaniel Moore | Nathaniel Moore |
 Robert Emmett KeaneMr. Page | Mr. Page |
 Horace MurphyMr. Miller - Homesteader | Mr. Miller - Homesteader |
 Jim CoreyNot listed | Not listed |
 Lloyd IngrahamNot listed | Not listed |
| BBruce MacFarlaneNot listed | Not listed |
 Robert McKenzieNot listed | Not listed |
| RRay NicholsNot listed | Not listed |
 Dorothy VaughanNot listed | Not listed |