Noose for a Gunman (1960)

Case Britton reluctantly returns to his home town where he had killed two men. The citizens are none too enthused about his return, but Marshal Tom Evans becomes more friendly when Cases explains that he has returned to warn the town that bandit Jack Cantrell intends to rob the stage and express office. Case's sweetheart Della Haines is a passenger on the stage. Case and the Marshal decide on a defense play.