Red Rock Outlaw (1949)

Jeff Larson (Bob Gilbert), a tough killer and outlaws gang leader, escapes from prison and terrorizes the countryside around Red Rock, especially a female troupe of itinerant musicians stranded near his hideout after their bus broke down, and also near the ranch of Terry Larson (Bob Gilbert), his nearly identical cousin. Carolina (Ione Nixon), a troupe member and Terry fall in love. Jeff attempts to murder his cousin and assume his position as an honest rancher. The plot goes awry when Jeff is killed by one of his henchmen, thinking he was Terry.