Christine Horn

A member of the Firehouse 51 family remains in peril.

The team's Thanksgiving plans are put on hold while they track an elusive international arms dealer in D.C. who recently murdered an MI6 officer who was Sloane's close friend.

McCall is asked to help a local family that lost their life savings in a suspicious fire. Also, Mel opens up to her parents about her PTSD.

Bozer's first overseas mission goes terribly wrong when Mac and the team are blamed for a terrorist bombing and the Phoenix Foundation is forced to disavow them. Using a ruler and coconut oil to make disguises, the team must avoid authorities and clear their names without any support from back home.

Bonnie is suspicious when her brother, Ray (recurring guest star LEONARD ROBERTS) returns from rehab and strikes up a friendship with Adam, and Christy and Bonnie have a brush with the law when they take Ray's fancy car for a joy ride.

NCIS investigates the robbery of a high-end arts storage by going undercover as potential buyers on the black market, to find who is behind the stolen items.