Airs: Monday, May 7 at 10/9c
When a new case picks at that pesky scab also known as Beckett's mother's murder (which Castle has secretly been investigating), Castle is forced "to wrestle with whether or not he needs to come clean about the secret that he's been holding from Beckett," creator and executive producer Andrew W. Marlowe says. Perhaps making the decision easier: The appearance of Battlestar Galactica's Tahmoh Penikett, who plays a mysterious man with a military background. (The military has snipers, right? Look out, Kate!) One way or the other, it sounds like they will air their dirty laundry. "Everyone is forced to put their cards on the table," Marlowe says. "They've been dancing around some issues. They've been living in subtext. …The cards that they put on the table last year didn't deal with how they felt about one another. [This year], everything comes out."
View more at TV Guide.