Beyond the Rockies (1926)

Con Benteen, an undercover agent for the Cattlemen's Protective Association, rides into a lawless town to investigate a band of cattle rustlers known as the Cloaked Riders. He joins the gang and gets the goods on Cottle, the gang's leader. Benteen is eventually identified as a legal officer and tied up in a shack containing live explosives. He escapes and rounds up the rustlers, winning for himself the love of Flossie, a dance hall girl.