Yankee Fakir (1947)

"Yankee" Davis and his partner,"Shaggy" Hartley, a couple of carny-type traveling (usually just ahead of the law) pitchmen with their own tent to pitch from, arrive in a small Arizona town, close to the Mexican border. Davis falls in love with Mary Mason, daughter of a Border Patrolman. Mr. Mason is murdered, and Davis sets out to find the killer, and thinks the town's richest citizen might know something about it.