Bloody Moon (1981)

Miguel, a horribly disfigured young man, goes on a rampage at a masquerade party and rapes and then mutilates a girl. Institutionalized at a mental asylum, he is released five years later, into the care of his sister, Manuela who, along with their wheelchair bound mother operates a boarding school for young women. Miguel becomes obsessed with one of the girls at the school, and wants to resume his incestuous relationship with his sister.

Originally passed with cuts for cinema. Bloody Moon was on the official UK video nasties list. Released with 1 minute 20 seconds cut in 1993. Released uncut November 2008.