Do you have a case of puppy love, Esposito?

Castle: We could keep him here at the precinct. We could use a mascot.
Espo: I thought that's what we had you for.

Dog Whisperer? Check. People Whisperer? Not so much.

Castle: Your friends name is Buttons Dutton.
Martha: That is unfortunate.

This is politics. Perception is reality. The truth won't matter.

Give him a chance because the moment you make a move on him, his career is over.

Castle: So we can narrow our suspects down to rich men with good taste.
Beckett: You saying you're a suspect?

That's going to be like looking for a needle in a needlestack.

It's not a sweat shop, it's a sex shop.

An officer and a gentleman. That could be the name of our crime log.

She's the best.

Castle (about Beckett)

Castle: I hate going to weddings alone.
Beckett: Well maybe we could be each others' plus ones.

Castle Quotes

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


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