After a string of winners, Roy Rogers faltered a bit with South of Caliente. Rogers, playing himself, is the owner of a trailer-van service who is hired to transport a prize horse across the Mexican border. En route, Roy is bushwhacked and the horse stolen. The animal's owner Doris Stewart (Dale Evans) suspects that Roy is the thief, but the actual crook is within her own circle of employees. The supporting cast includes burlesque funster Pinky Lee (checkered cap and all) and character actor Leonard Penn, the father of current screen favorites Sean and Christopher Penn. Though not Roy Rogers' best film, South of Caliente still scores in the action department.