Beckett: If Hector's as dangerous as advertised this could get a little hairy.
Castle: Hairy's my middle name. That sounded a lot better in my head.

A southern chill? More like a polar vortex.

Castle: Speaking of your sister.
Gates: Let's not.

Maybe the invisible hand of the market killed Peter that would explain the lack of defensive wounds.

Just so you know, the doctor said that kissing will speed my recovery.

You know me Kate. I wouldn't just leave.

I do know I missed you terribly because there's no way I wouldn't.

A mystery I might be able to solve, what a relief.

Beckett: That's why she was throwing herself at you. She wanted you to recommend her for the part.
Castle: What?
Beckett: For the record, she's nothing like Nikki Heat.
Castle: Oh! You just can't stand it that a beautiful actress is actually interested in me.
Beckett: Why would I care?
Castle: Exactly. That's a good question. Why would you care?
Beckett: I don't!
Castle: Fine! I'm gonna go get some coffee.
Beckett: Fine! I've got work to do.

Beckett: Ellie Monroe, huh?
Castle: Yeah, she's pretty upset about this whole Bobby Mann thing. That we were his last guests. She thinks it would be comforting if we were to be together.
Beckett: "Comforting?" Is that what the cool kids call it these days?

Castle: You sure you want to take that many books?
Alexis: Overambitious for a 5 day trip?
Castle: You're gonna be responsible for your own pack. I think you're supposed to be more Sacagawea than a scholarly reader. Besides, look at all those pages the trees might want revenge.

Castle: What would you do if you were attacked by an invisible demonic force?
Beckett: I'd tell Ryan to lay off the bean burritos at lunch.

Castle Quotes

I need time to stop being mad and you need time to figure out a way to be OK with this.

Alexis

I tried to stay in the car I really did.

Castle