Castle, Season 3

Castle:
Oh, it's really not complicated. You were raised by a single mother. She was blonde, she was beautiful, but she never wanted you. When you were, what, twelve? She died, suddenly. Let's say drug overdose. You went foster care, the bad kind. So much hate. So much hate towards your mother for abandoning you that you kill these women to get back at her. But you leave them looking peaceful because as much as you hated your mother, you loved your mother. Am I getting warm?

Jerry:
You're drawn to death. You like to be around it, because it thrills you. Now, where does that come from? Your own suppressed impulses? [Leans forward] How close to death do you want to get, huh?