Killers Three (1968)
Two backwoods North Carolinians (Robert Walker, Jr., and Dick Clark, who also produced) rob a bootlegger's safe, kill several people in the process, and head for California with Walker's wife (Diane Varsi). Merle Haggard appears as a sheriff and sings the title song and "Mama Tried."
Is Killers Three (1968) on Netflix?
Yes! Killers Three (1968) is available on Netflix since Wednesday 1 May 2013.