With 24 episodes, Special Agent Jethro Gibbs (Mark Harmon) continues to guide the elite unit from the Naval Criminal Investigative Service into dangerous waters in order to protect the nation from biological attacks, hospital bombings and an unpredictable terrorist group known as The Brotherhood of Doubt. One of their own is taken hostage by a terrorist at large and the mysterious re-emergence of the infamous Privileged Killer takes the team to New Orleans for a thrilling, two-part episode.