Gibbs and the team work to clear the name of a Navy medic killed in Iraq, who is the prime suspect in a murder in his hometown.

Gibbs' worst fears are confirmed when he learns that his nemesis, Arab/Israeli double agent Ari (Rudolf Martin), is back in Washington D.C. on assignment to kill him. Ultimately, the NCIS team discovers that Ari has a bigger plot... and they end up paying the ultimate price trying to thwart it--the death of a team member.