Ryan, Castle and others in “Need To Know”

Ryan

Let's say Hank did embezzle money and killed Charlie to silence him. Why are the feds involved?

Castle

Well, maybe it has something to do with the Russians

Esposito

Well, if we knew the feds' angle, we'd have a leg up on solving this.

Castle

Sorry guys. I've yet to come up with a crazy, genius theory yet. [Realizes Ryan and Esposito had stopped walking]

Ryan

You don't need to. Not when you can go directly to the source.

Esposito

Get Beckett to give us the lowdown.

Castle

Okay, wait a minute...

Ryan

We get much-needed case information, you get to clear up any lingering doubts about your loyalty. Everybody wins.

Castle

Okay, guys, no, I can't do that, all right? After D.C., we promised we wouldn't-

Esposito

We did you a solid getting you on this case, Castle. It's time to pay up.

Castle

Guys, this is my fiancée, okay? What does it say about our future if I keep pushing the boundaries?

Ryan

Castle, you whole relationship is built on the foundation of your boundary-pushing.

Castle

...Good point.