 Roger Corman produced and directed this psychological gangster film based on fact. Machine gun totin  Ma Barker (Shelley Winters) lead her family gang (her sons) on a crime spree in the Depression era. Her loyal brood have every perversion imaginable. The sadistic Herman (Don Stroud) sleeps with his Ma. When Fred Barker (Robert Walden) is released from prison, he brings home his cell mate/lover Kevin Dirkman (Bruce Dern), who also sleeps with Ma, much to Fred s chagrin. Lloyd Barker (Robert De Niro) is a spaced-out drug addict who sniffs glue if nothing better is around. Ma kidnaps happy-go-lucky millionaire Sam Adams Pendlebury (Pat Hingle) and holds him for ransom. Clint Kimbrough plays Arthur Barker, Ma s wallflower son and Diane Varsi plays Herman s hooker lady friend Mona Gibson. The bloody finale is virtually choreographed and a visual stunner. Filmed in the Ozarks.