More 'Castle' Episode 4.16 Photos: Mobilizing for Battle in 'Linchpin'

Is war coming to Castle? Will Castle and Beckett somehow manage to stop it? After the downward spiral into warmongering chaos we saw in "Pandora," this outcome seems possible. But, as we can see in these new photos from "Linchpin," the CIA won't go down without a fight. "Linchpin" airs on Monday, February 20 at 10pm on ABC.

Click here for more "Linchpin" photos.