Linchpin

Time is running out as Castle and Beckett race to find "Linchpin" in order to prevent an event that could plunge the country into war. (Part 2 of 2)

Season 4 | Episode 16
TV-14-DLV
Available September 10
PRESENTED BY
Cast

Molly Quinn

Alexis Castle

Nathan Fillion

Richard Castle

Jon Huertas

Javier Esposito

Seamus Dever

Det. Kevin Ryan

Stana Katic

Kate Beckett

Susan Sullivan

Martha Rodgers

Tamala Jones

Lanie Parish