Station West (1948)

Dick Powell stars as Haven, a government private investigator assigned to investigate the murders of two cavalrymen. Travelling incognito, Haven arrives in a small frontier outpost, where saloon singer Charlie (Jane Greer) controls all illegal activities. After making short work of Charlie's burly henchman (Guinn Williams), Haven gets a job at her gambling emporium, biding his time and gathering evidence against the gorgeous crime chieftain Cast as a philosophical bartender, Burl Ives is afforded at least one opportunity to sing.