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 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.
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.
The team is blamed for a terrorist bomb.