I think we may have just dug our own graves.

Kate Beckett: I mean, there's a reason why Capt. Gates doesn't get up on the stage and have fun.
Rick Castle: I just always assumed it was because she was genetically incapable of it.

Rick Castle: That thing in the shower. That is delightful.
Kate Beckett: That is not a routine. That's two naked people singing when there's no one around to see or hear it.

Rick Castle: I know I have occasionally theorized that a conspiracy was afoot.
Kate Beckett: Occasionally?

You can not leave behind what is always at your side.

Believe me, Beckett has plenty of experience taking a bullet for other people doing stupid things. Hell, she's married to me.

Ryan, this is my third marriage. I think I know what I'm doing.

This is going to be fun this little threesome here. Investigatively speaking.

Kubrick was right. A. I. is a bad idea.

I wanted to go to Mars not die on Mars.

Space. The final frontier. These are the voyages of Castle and Beckett. They're ongoing mission to explore strange, new motives. To seek out new witnesses, new suspects for murder. To boldly go, oh, right over here.

Rick Castle: Checking you for bites and scratches. Just making sure you didn’t somehow get impregnated.
Kate Beckett: If you think that’s how I’d get pregnant we need to talk.

Castle Quotes

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

Castle

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.