Person of Interest, Season 3

Patrick Simmons:
What do you want? Quinn and I are busted. HR is dead. Nothing else to do but rub my face in it.

Carl Elias:
That's not really my style.

Patrick Simmons:
Then why the hell are you here?

Carl Elias:
Well, there remains a debt. Civilization rests on the principle that we treat our criminals better than they treated their victims, that we not stoop to their level. But you and I are outliers. We're not really a part of civilization. We're something older. Which means, of course, that we can do the things that civilized people can't. I offered to kill you for Detective Carter many times, and she always said no. She was civilized to the very end. I don't think she liked me. But I liked her very much, and you killed her. So now I consider it my responsibility to fix the particular problem that is you, Officer Simmons.

Patrick Simmons:
You really think you're gonna be the one to kill me?

Carl Elias:
No. No, my friend is going to kill you. I'm just gonna watch.