The Naval Criminal Investigative Service is charged with the responsibility of law enforcement including conducting forensics, surveillance, and analysis of data within the US Navy. Special Agent Leroy Jethro Gibbs heads the Major Case Response Team, an elite group of investigators. Agent Gibbs is an effective leader and demands the most out of his team, yet he has problems following Navy protocol and orders from above. Agent Anthony DiNozzo is a flirtatious member of the team who's head first attitude hurts and helps him during cases. Agent Tim McGee is the Computer expert who is constantly teased by his co-workers. Goth girl, Abby Sciuto, is the forensic science specialist. Together, the team solves crimes including murders, sniper shootings, uncovering moles in the military, and kidnappings.

Agent Gibbs must try to find the mole in his newly formed team.

Tony investigates a suicide onboard the USS Seahawk and Gibbs and Ziva arrive to help. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

An old friend of Gibbs, implicated in a murder, asks Gibbs for his help and someone steals Abby's cupcake. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A case leads NCIS to Stillwater, Gibbs' hometown, where the team meets his father. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The FBI is holding a man that may be the key to solving the NCIS's case involving the murder of a Marine. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Gibbs is made to play a game where the clues are found in videos of murder uploaded on the internet. The team rushes to find the killer and find that the next victim might be Gibbs. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The NCIS team investigates a bank robbery at Quantico which left a guard dead. The team also takes on a new recruit to train, Dwayne Wilson. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The team is tasked to break into a highly secure government building, but soon discover that they are being used in an elaborate plan. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The NCIS team finally finds out who the mole is inside their unit. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A backyard brawler is killed by someone who ran him off the road. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

An elderly couple found murdered while decorating for Christmas leads the team to find a war veteran long thought to be dead. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

McGee is sent to a women's prison to obtain a confession. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A man is stabbed in the street and the team is called in to investigate, but the investigation leads to an attack against one of their own. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A Navy Captain is found murdered and the team investigates. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Gibbs investigates a case that might involve someone from his life before joining NCIS. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Tony takes the lead on a case involving a man that he incorrectly put in prison. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A fellow NCIS agent is gunned down and leaves Abby a clue that leads the team on a Western adventure. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Vance tells Gibbs that he is going to Chicago to investigate the death of an old friend. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

A mother discovers a gun in her son's room on base and the team investigates. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The team investigates the murders of criminals lead by a mysterious mastermind with the help of Kort. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Abby is recruited to continue the work of a government scientist who has gone missing, but the team fears she may meet the same fate.

Gibbs and the team join forces with the Office of Special Projects led by a rival. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

Tony becomes concerned over Ziva's relationship with a shady Mossad agent. The OSP's Agent Callen infiltrates a terrorist organization. Read the Vitemo recap and review to find out what happened on CBS's NCIS.

The team investigates the murder of an ICE agent. Meanwhile, Tony and Rivkin face each other in a showdown to the death.

The team travels to Israel to deal with the displeasure of the head of the Mossad, Ziva's father. Gibbs makes a choice that changes the team forever.

Tony searches for Ziva in the Middle East but ends up captured by terrorists.

Ziva asks to be let back in the team, but finds resistance from an unexpected source. The team investigates three friends murdered during a bachelor party while Tony and McGee dispute which one of them is the sidekick.

Gibbs and the team work to clear their name after a blogger who was later murdered accused them of being part of a conspiracy theory.

A body from the ship that Ziva was on turns up. The team becomes suspicious of their teammate after the boat is found with all of the crew members dead.

On Devil's Night, the team investigates the death of a prankster Marine who was found frozen to death in his car.

Gibbs investigates two private contractors executed on a boat he gave to his former boss Mike Franks.

After the death of a doctor, the team suspects that Kai, a female North Korean assassin, is out to kill Vance for revenge.

After the power goes out in D.C., the team struggles with manual equipment while trying to solve why there was a shoot out at a internet service provider company.

The team protects a girl who works at a military games research facility. Meanwhile, Ducky invites everyone over for Thanksgiving dinner.

As Christmas approaches, the team investigates the death of a recently converted Muslim soldier killed out in the snow. Gibbs's father arrives in town which brings concerns.

The team investigates the death of a test pilot who died while flying a jet pack. A mysterious lawyer arrives in town to disrupt Gibbs's investigation.

Tony's father arrives in town and becomes a suspect after a failed assassination attempt of a Saudi prince.

Tony and Ziva escort a witness back from Paris, but learn there is an assassin on board. Vance and Gibbs question a D.C. madam about the hit she set up.

The team investigates a terrorist plot involving a dirty bomb. Hart returns to get in the way of Gibbs's investigation.

Damon asks Gibbs for help after he discovers his friend murdered. Ziva infiltrates a gang and becomes part of their plan to hijack a semi truck.

Gibbs learns that his ex-mother in law is involved in the murder of a Navy officer.

The team investigates the shooting of a man who thought was MIA and later started a new life with a large amount of cash.

The team investigates the death of a navy diver who was searching for sunken treasure with the help of the Coast Guard who is led by an investigator who is similar to Gibbs.