A wealthy woman asks Cal to check out her new boyfriend when her son discovers a briefcase filled with cash and a notebook in code.

Patrick and the team investigate the murder of a woman with ties to one of the fighters. Meanwhile, LaRoche focuses his investigation on Rigsby, who in turn is forced to ask Cho for a huge favor in order to keep his job.

Clarice and Olaf move forward with the plan to blow up Atlas Arena when they learn of their powerful ally in the GDD. Singh covers their tracks by framing the Graystones as terrorists, forcing them to go on the run.

The grieving Adamas confront the Guatrau for his string of recent decisions in the hopes of avoiding further violence.

As the Adama brothers rise to new positions in the Ha’la’tha, they are haunted by the mission of their late parents and the different direction the Guatrau is taking them. Daniel hopes to use this with Sam by offering Cylons for Tauron, in exchange for refraining to carry out the ordered hit.

When Castle’s novel « Heat Wave » is turned into a movie, actress Natalie Rhodes, shows up at Beckett’s invitation to better understand the character she’s going to play. Meanwhile, the threesome investigate the murder of a high-class matchmaker.

When Alicia gets a vague tip from a courthouse clerk in the appeal case of a death row inmate, the law firm races to secure a stay of execution. Peter Florrick prepares for his first debate with Glenn Childs and Wendy Scott-Carr.

The CBI pursues two lines of investigation when a Santa is murdered: Patrick Jane goes undercover in an AA group; and Rigsby and Van Pelt question members of an authentic Santa society. Meanwhile, following the demise of a person in custody at the CBI, J.J. LaRoche is brought in to question the team when it appears to be an inside job.

While Frankie’s parents Tag and Pat visit for Christmas, Mike is less than thrilled. To make matters worse, the Hecks have a disagreement with them over Frankie’s idea on how to celebrate the holiday without exchanging presents

Carter can’t get into the Christmas spirit especially with the town surrounded by a force-field. Fargo organizes the GD holiday party, and Allison is full of holiday cheer.

Castle and Beckett investigate the murder of a dockworker turned bar owner who’s body is found floating in the East River. In the process of the investigation they uncover a secret buried since the days of Prohibition.