The Final Nail

Castle and Beckett investigate a murder in which the prime suspect is one of Castle's old friends.

Season 3 | Episode 15


Molly Quinn

as Alexis Castle

Nathan Fillion

as Richard Castle

Jon Huertas

as Javier Esposito

Seamus Dever

as Det. Kevin Ryan

Stana Katic

as Kate Beckett

Susan Sullivan

as Martha Rodgers

Tamala Jones

as Lanie Parish