3XK

A dead woman leaves clues indicating that the Tripler Killer aka 3XK is back after a four-year hiatus. Castle and Beckett play a deadly game of wits with the killer to prevent more killings.

Season 3 | Episode 6

TV-14-DLV
Cast

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