Gunfight in Abilene

Gunfight in Abilene is a 1967 western film starring Bobby Darin in a nonsinging role. It is the second film based on the short story Gun Shy by Clarence Upson Young, the first being Showdown at Abilene 1956, starring Jock Mahoney in the role played by Darin in the remake.

A feud is ongoing between local cattlemen and farmers. Cattle baron Grant Evers takes it upon himself to exact harsh justice against rustlers, with or without proof. A grudge exists Evers and the new sheriff because Cals fiancee, Amy Martin, believing he was dead, is now engaged to marry Evers.Evers learns that it was his own brother who was shot by Cal during the war. But he is killed by Slade in a quarrel, whereupon Slade is shot dead by Cal. ........

Source: Wikipedia