Kate Beckett: And if you tell anyone what I'm about to say, there's gonna be another shooting, but... I've gotten used to you pulling my pigtails... I have a hard job, Castle, and having you around makes it... a little more fun.
Richard Castle: Your secret's safe with me.
Kate Beckett: So we have reason to suspect that our killer was wearing your perfume.
Kay Cappuccio: Well, that's impossible. It wasn't even out yet. I'm the only person who had it.
Kevin Ryan: Does she realize she just incriminated herself?
Javier Esposito: I said she was nice. Didn't say anything about smart.