9. Krug & Co - Last House on the Left (1972)
If ever there was a group of filthy, degenerate psychos, Krug and his pals fit the bill. They humiliate, torture, rape and kill two beautiful, innocent young teenage girls. Enforced humiliation includes one of the girls being forced to wet herself, the girls are forced into lesbian sex play and when the end comes for the girls, it ain't pretty. When one of the girls is brutally stabbed to death, psycho sadist girl Sadie rips out some of the intestines in a moment of overkill. Krug is such a psycho bastard, he keeps his son addicted to smack so he can control him. And he engineers his son's demise by telling him how useless he is and how he should kill himself. This does the trick. Imagine getting your kid to commit suicide. That is epic psycho-ness.