Being Human, Series 3

Herrick:
I have something of a dilemma, Nina. Perhaps you can help me.

Nina:
Christ, you made me jump. What the hell happened here? And why are you wearing that?

Herrick:
See the thing is, your boyfriend tore me-literally-limb from limb. Now, aside from anything else, have you ever heard of anything so... undignified? [chuckles, then puts his hand over Nina's mouth before she can shout for help] But the pain... was incredible. And I remember every moment. And so now, not unreasonably I think you'll agree, I want him to suffer. But not for moments. For days, weeks... months. And the best way of doing that, um, is to kill you. Here's my dilemma. You were kind to me. Everyone else in the house wanted me dead. Except for you... It's a knotty one, isn't it?