— The shrink - 4x05
— Insurance Recovery Lady 4x05
Beckett: Well, anything’s possible.
Castle: You really believe that?
Beckett: That’s what the great love stories are about, right? Beating the odds.
Castle: I hope they make it.
Beckett: Me too."
— Castle / Beckett 4x03 Head Case
— Castle / Beckett 4x02
— Castle 4x02
— Stana Katic - ET interview
Beckett: I really, really liked him. That wasn’t enough. After my mother was killed, something inside me changed. It’s like I built up this wall inside. I don’t know, I guess just didn’t want to hurt like that again. I know I’m not gonna be able to the kind of person that I want to be, I know I’m not gonna — I’m not gonna be able to have the kind of relationship that I want… until that wall comes down. And it’s not gonna happen ‘til I put this thing to rest.
Castle: Well, then I supposed we’re just gonna have to find these guys and take ‘em down."