Brute Force (1947)
B&W action flick about a group of inmates serving time in prison for various offenses. The prison is a powder keg of pent-up frustration and anger which is only exacerbated by the actions of the manipulative and sadistic head of the prison guards. Much of the action seems like it came from a pulp fiction novel or a crime comic but even though it's a bit unbelievable, it's still an entertaining movie.