Castle and Beckett discover evidence that links a young woman's murder to Sen. William H. Bracken (Jack Coleman) -- the man responsible for the murder of Beckett's mother; Beckett faces complications as she tries to finally bring Bracken to justice.
Gibbs, McGee and Torres travel to a remote area of Paraguay, controlled by a violent group of rebels, in an attempt to locate a missing Navy Seal who disappeared during an unsanctioned trip.
The tribe leans on each other as they cope with the loss of a loved one.
Denise has her hands full with her newborn baby, while getting ready to meet her future daughter-in-law. Claudia Joy prepares to send Emmalin off to college. Roxy is having problems with her preteen son, TJ. Pamela has to decide whether she's going to stay with Chase or take the job with Atlanta PD, however something Boone says complicates her decision. Joan and Roland discuss the next step in their relationship.
Roxy sees a female soldier get taken away from her daughter in handcuffs and asks Claudia Joy to look into the matter; Jeremy is smitten with a nurse from his group therapy session.
