The special agents of the Naval Criminal Investigative Service must hide their real identities as they hunt down dangerous criminals that threaten national security.
In the aftermath of Kate's death, the team struggles to cope as Gibbs pursues revenge with a single-minded focus. Mossad agent Ziva David is assigned to the team, forcing all of them to reckon with Kate's loss and the fact that life must go on.
A number of losses are incurred when two officers are found dead and later on when an ambush is set behind a bar, it leaves one Marine dead and another severely injured. Meanwhile, Ziva returns to the NCIS, and the team has to solve many death mysteries.
The team's search for Ziva sends them on a path that none of them expected, as Ziva realizes that she has a choice to make before rejoining the team in their investigation of various cases.
A continuation of the series of criminal cases, which the Naval Criminal Investigative Service resolves with genius, as they handle many difficult cases and know how to solve them efficiently.
Investigations for the shooting of Tony and the two other agents continue, while Harper targets offshore installations, due to the fact that his son was killed at sea because of the lack of safety procedures on a ship.
NCIS team continues to solve criminal cases while they struggle to come to terms with the aftermath of the Navy Yard bombing.
The Naval Criminal Investigative Service team continue their job of handling a set of challenging criminal cases led by Special Agent Gibbs.
The NCIS team continues to investigate various criminal cases, including the case of the terrorist, Sergei Mishnev, who sends one of his assistants to the US to kill a Russian scientist who refused to work with him.
The NCIS team continues to take on tough cases in various locations, where many crimes take place and the team must solve them.
Special Agent Leroy Jethro Gibbs continues to investigate cases with his NCIS team, including a series of explosions that mysteriously target cars, while many members of the armed forces are being targeted by an anonymous.
In season 20, the team investigates who might have a vendetta against Parker, who is still on the run with his ex-wife Vivian, while McGee's personal life collides with his professional life when a father from his children's school is involved in a break-in at a government warehouse.
The team helps Torres when he puts his future on the line by deciding to confront the man who tormented his family when he was a child. While the team mourns the loss of Ducky, the agents find comfort in working on one of their unfinished cases involving a woman whose father was dishonorably...Read more discharged from the Marine Corps.