As the hunt for Ziva’s replacement begins, Gibbs and his remaining team members must head back to work with the past still weighing heavily on their minds.

The team discovers the bizarre death of a Marine and his two friends may be linked to their past, but its Gibbs who ends up taking a trip down memory lane.

The team must take a second look into the death of a lieutenant after the blogger who accused them of a cover-up ends up dead.

When a Marine’s body surfaces halfway around the world, the investigation forces Ziva to dig up a buried chapter of her life.

A Marine famous for pulling his original pranks is found murdered on the night of Halloween and the NCIS team uncovers that the victim’s pranks may have become a ghoulish retribution. Meanwhile, Ziva is given a new role on the team.

A murder investigation prompts Gibbs and the team to play family counselor to his former mentor, Mike Franks, in the hopes of preventing a bloody international conflict.

With the team’s help, Vance faces his demons while uncovering a complex relationship with a killer that puts his whole family in danger.

The team needs to use other resources when an attempted robbery leads to the death of a Lieutenant and the entire city suffers a major blackout.

When a death of a Marine leads the NCIS team to a government think-tank filled with child prodigies, the team has to protect a 12-year-old child who may be the next target of the killer...

The NCIS team is called in to investigate the death of a reverend’s enlisted son, and they soon realize he may have been the victim of a hate crime. Meanwhile, Gibbs tries to figure out why his father had a sudden change of behavior when he comes to visit during the holidays.

When a Navy pilot is found dead under strange circumstances in a secluded area, the team finds themselves battling a no-nonsense attorney with a hidden agenda. '

Anthony DiNozzo Sr., father of Tony gets involved with a case concerning an assassination plot against a prince. The elder DiNozzo's link will cause Gibbs to doubt whether Tony can remain impartial in the investigation.

In order to solve a case, Tony and Ziva are sent packing to the most romantic city in the world, Paris! The hotel screws up their room reservations and accidently has them share a room.

The team finds themselves in a race against time when a terrorist group threatens to detonate a "dirty bomb" in the D.C. area.

When a Marine is found dead, Gibbs, Fornell and the team hit the open road to bust an illegal trucking operation.

Secrets arise when Gibbs' former mother-in-law surfaces as a witness in a murder investigation.

The team investigates the shooting of a Marine and uncovers more to his life than anyone would have ever imagined.

The team discovers striking similarities between themselves and their CGIS (Coast Guard Investigative Services) counterparts when a Navy diver seeking sunken treasure is found dead.

When the team links the death of a Navy officer to a call-girl, they have to use the help of Holly Snow to help them find the culprit.

When an NCIS polygraph specialist's night job takes a dangerous turn, Gibbs, Fornell and the team have to uncover the truth.

DiNozzo finds himself increasingly captivated by a woman he's never met while investigating the murder of her brother.

The team tries to track down a serial killer, while Abby heads south of the border to give a speech with McGee in tow.

When a colleague's murder sends shockwaves through the team, Gibbs uncovers a surprising link to the crime.

In the conclusion of a two-part finale, Gibbs heads to Mexico for a showdown with a drug cartel intent on revenge. Gibbs has to reassess the rules by which he lives when he is forced to make a devastating choice to save the lives of his team.