Bonnie is suspicious when her brother returns from rehab and befriends Adam; Christy and Bonnie have a brush with the law when they take Ray's fancy car for a joy ride.
The team tracks an elusive international arms dealer who recently murdered an MI6 officer; Abby races Delilah to the hospital when her labor starts three weeks early.
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.
NCIS investigates after two men are blown up by their own explosives while attempting to break into a military base; Callen wants to take the next step with Anna; Sam moves in with his father.
The team is blamed for a terrorist bomb.
