Station West

Station West is a 1948 blackandwhite film directed by Sidney Lanfield and based on a Western novel by Luke Short.

Two soldiers have been robbed and murdered while guarding a shipment of gold. Into town rides Haven, a military intelligence officer traveling incognito.A beautiful saloon singer catches Havens eye. After he meets Mrs. Caslon, who owns the gold mine, Haven hears that someone called Charlie is the brains behind the scene. He finds out to his surprise that Charlie is the singer. ........

Source: Wikipedia