Delirium ( 1979 )

Charlie is a psycho; his twisted mind drives him to butcher beautiful young women. Tormented by his past, he brutally murders again and again. He mush be stopped. But how? Hidden beneath the streets of the city, a secret committee of leading citizens has formed a vigilante council. Taking the law into their own hands, they hunt down people they feel have escaped justice. This kangaroo court, led by a professional killer, hides beneath the cloak of respectability, protected by its influential members. Many, perhaps innocent, people have been executed by this invisible and misdirected group, but they made a fatal error. They hired Charlie.