The Man from Nowhere.

In Snake River, Buck Farley breaks up a fight staged by crooked Chicago Saloon owner Johnson, who set-up alcoholic Jake Frazer as the town's sheriff as a joke. Johnson pretends to have saved Buck's life (when in reality he was planning on shooting him), which indentures Buck to Johnson, and Buck becoming his deputy. Buck also starts to have feelings for Jake's daughter, Emma, who has also rebuffed the advances of Johnson. Johnson uses a ruse to get Buck searching for some allegedly stolen horses in the desert, but Buck forces Johnson to accompany him (after he realizes that Johnson is not on the up and up, and also has designs on Emma)...