Castle: We're all on the same team here.
Beckett: No we're not. You're on her team because the way you look at her, you're sure as hell not on mine.

Beckett: What are you doing?
Castle: Bracing myself to shield you from a hail of bullets.

If I did tell you, I'd have to kill you.

It was never like it is with you and me.

Do you realize what this means? We're like spies. it's like a Jason Bourne movie.

Gives new meaning to the term overkill.

Beckett: Did you just say Kate? Are you picturing you as the PI and me as the gangster's girlfriend?
Castle: No!

That's the stuff dreams are made of.

I got no love for this thing, just you.

Why am I narrating?

She was worth every punch.

If I'm anything, I'm discrete.

Castle Quotes

Beckett: (Clears throat) Ahem. What's the deal with men and boobs, anyway?
Castle: Biological. We can't help it.
Beckett: But doesn't it bother you that they're so obviously not real?
Castle: (Pauses) Santa's not real. We still love opening his presents.

Sometimes the hardest things in life are the things most worth doing.

Castle