I'm a homicide detective.

Beckett

I know why I'm here.

Beckett

Castle: Gates can see.
Beckett: I don't care.

Apology not accepted.

Esposito

I'm not going to lose her again.

Your books are not exactly Shakespeare.

Martha [to Castle]

Castle: Thank you.
Beckett: Always.

Then who's this, your evil twin?

Kevin Ryan

Ryan: You know what time it is? It's Ryan time.
Esposito: Please just stop.
Ryan: My name's Ryan and I hate lyin'.

I think I went to a party there. Of course it was the '70s so I can't be sure.

Martha

As if clowns weren't creepy enough.

Beckett: There's been a murder.
Castle: Yeah, of Linus' feelings.

Castle Quotes

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

Castle

Castle: How do you know when you're in love?
Beckett: All the songs make sense.