Rick Castle at a loss for words? Must be a first.

Sophia

Murder plus kidnapping equals more years than you have left.

Beckett

Gives new meaning to the term overkill.

There, your better half.

Martha (as Castle's phone rings)

You two are a walking fairytale.

Lanie

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.

Where have you been all my life?

Castle Season 4 Quotes

Sometimes it's the people we think we know best that we don't really know at all.

Castle

She's the best.

Castle (about Beckett)