Person of Interest, Season 3

Patrick Simmons:
I always knew you were a killer. Get it over with, will ya?

Lionel Fusco:
That's just it. I could've been just like you, a bottom-feeder who turns on his own kind. For what? Money, power? I got lucky. I had a partner. She was good for me, for a lot of reasons. She reminded me that I could be good again, too. I could be a good father, a good friend...a good cop. I'm not gonna let you undo all the good she did. Carter saved my life. She-- she saved me from myself because she believed in me...and I'm not gonna throw all that away on a piece of crap like you. Patrick Simmons, you're under arrest.