Christy convinces herself that everything is fine even though her family is basically homeless. Surprisingly, Bonnie is the one who tries to bring her back to reality.
The Graysons try to protect their own, as suspicion grows about the shooting of Emily Thorne.
Gibbs is granted protective custody of a 10-year-old orphaned refugee, Elena (Lily Rose Silver), when an NCIS case reveals she is the target of a violent gang.
Walden and Alan are determined to convince Louis that Santa Claus is real. MELANIE LYNSKEY returns as Walden's stalker, Rose.
Sam and Deeks recover from torture; the team searches for stolen nuclear weapons.