"Psychopaths. Sociopaths. Maniacs gone wild. There are lots of films that peer into the darkest of minds and explore what those people are capable of. They frighten us, yet draw us in with morbid intrigue. Psychopaths and sociopaths are those who suffer from antisocial personality disorder (ASPD). A psychopath is one who has absolutely no conscience. They're capable of doing heinous things and experience no guilt, shame, or self-loathing in committing those acts. A sociopath has a conscience and can recognize that what they're doing is wrong. They have a conscience, but it's weak and easily ignored. A key difference is that psychopaths are 'cold' while sociopaths are 'hot.' Psychopaths are emotionally vacant, callous, and calculating, while sociopaths are volatile, temperamental, and wild. That said, here are the best movies about psychopaths, sociopaths, and maniacs that are absolutely worth watching." - whatnerd.com