Castle and Beckett’s newest investigation leads them aboard a cruise ship in search of a murderer in the winter finale of ABC’s Castle.
Castle airs Mondays at 10:01 p.m. ET/PT on ABC.
The official synopsis for “Mrs. & Mrs. Castle”:
Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.
A clip from this week’s episode:
Check out a few stills from Castle Season 8, Episode 7: