Luther, Series 1

Lucien Burgess:
It's a kink, a sex thing. Many many women fantasize about being tied up, strangled, raped, eaten.

DCI Luther:
You think so?

Lucien Burgess:
Oh, yeah. The more depraved the killer, the more women fawn on him. It's called 'hybristophilia'.

DCI Luther:
'Sexual arousal from thoughts of violence.'

Lucien Burgess:
It's his willingness to murder that attracts her. His murder becomes hers.