I found Killer Nun to be a great nun-exploitation horror film. It was originally banned in The UK, and was banned in Italy upon it's release. It is about a morphine addicted nun who is sliding into madness, The head nurse & nun in a hospital, finds that Sister Gertrude's increasingly psychotic behaviour to be a danger to the staff and patients around her. She starts to torture some poisoner's in the hospital, breaks an old woman's false teeth, and also stalks the young nuns in the convent for some kinky sex, and lesbianism, I found it to be quite a shocking film to watch in certain parts. I would recommend this film to other viewers to watch, as long as they can take the content of the film.