The River's Edge (1957)

Allan Dwan was one of the few directors who mastered the art of making B-movies look better than plot or budget allowed. In this thriller, Dwan's final film, Ray Milland plays Nardo Denning, a crook who needs to smuggle his cash into Mexico. His ticket over the border is ex-girlfriend Margaret Cameron who is married to border guard Ben Cameron but as the trio set out into the mountains and deserts, Cameron uses his knowledge of the territory to outwit the murderous Denning.