Andrew Bongiorno

The murder of a petty officer sparks a lead in a 40-year-old airport bombing cold case that Gibbs and DiNozzo have been assigned to for the past two years. Also, McGee is jealous that he was not previously briefed on the cold case.

Callen and Granger try to clear Sam's name after he's arrested for a woman's murder; Kensi and Deeks find a link between the victim and Sam's past.

When plans to infiltrate the building go awry, Gavin comes face-to-face with its enigmatic leader; Eve, Levi, Sam and Izzy are forced to rely on a former adversary to lead a rescue attempt; Josh and Riley enjoy some fun before a startling turn.

Kate learns that dating in LA is more difficult than she thought. Plus, Harry has a new job venture, and the boundaries between Karen and Robert become complicated.