Castle Season 5 Episode 15

Castle: (To Beckett) You know, I still remember when Alexis was born, they handed me this tiny person, all bundled up. She just stared up at me. And when I looked down at her, this feeling hit me, like I'd been struck by lightning. It was love. That instant, inexplicable love you can only feel for your child. In that moment, I knew. I knew my life had changed forever. And now it's about to change again.

Beckett: (after Castle tortures him) Tell me what happened with Douglas Stevens.
Castle: I appealed to his humanity.
Beckett: I didn't think you had that side to you.
Castle: When it comes to the people I love, I do.

Beckett: Castle, listen to me--
Castle: Don't. Don't promise me you'll find her unless you can do it, because ... I would never forgive you. Anymore than I'd ever forgive myself.

Castle: Did a web search on El-Masri. He's worth over $300 million.
Beckett: Yeah, but still, who hires an ex-commando to babysit their daughter?
Castle: I've considered it.

Beckett: It's like the guy was invisible.
Castle: He was hiding in plain sight. A foreign agent in deep cover on some kind of special reconnaissance mission.
Beckett: So then why would he shoot up a van?
Castle: Maybe Jack Bauer was driving.

Esposito: This was a serious shooter.
Beckett: What else do we know about him?
Ryan: Well, Hasim Farouk is a Saudi national living here as a student.
Castle: Majoring in what, urban warfare?
Ryan: Uh, undeclared, actually, up at Columbia.
Beckett: So what was he doing in Lower Manhattan?
Castle: (Columbia is Alexis' university) More importantly, what is Columbia doing admitting gun-toting lunatics and are there any more of them?