Decision at Sundown

Decision at Sundown is a 1957 Technicolor western directed by Budd Boetticher and starring Randolph Scott.

Bart Allison Randolph Scott rides into a sleepy town named Sundown with the intention of killing local boss Tate Kimbrough John Carroll by sundown.Some years earlier Kimbrough had an affair with Allisons wife who later committed suicide. Tensions build as sundown approaches, not just between Allison and Kimbrough, but among the townspeople as well. ........

Source: Wikipedia