NCIS searches for a missing undercover agent in the midst of an active hostage situation.

As Vance prepares to host diplomatic talks with Venezuela, the team is called in to investigate the dead body of one of his inside men.

NCIS is called in to investigate when a Lieutenant returns home on the eve of Halloween to find a surprise party being thrown for someone else at his place.

After receiving intelligence on deadly threats to multiple locations that could lead to a catastrophic war, NCIS is called in to try to neutralize the danger.

NCIS works with the CIA to discover what secrets are being kept by Captain Butler, an elderly former spy with dementia.

Things become tense when Knight is assigned to protect his wife after the home of a high-level defense contractor is attacked.

NCIS investigates a murder related to a car that begins driving on its own.

When a shocking tell-all threatens to ruin Christmas for a decorated Marine, NCIS must uncover the truth and deliver a holiday miracle - before the book hits shelves and turns a hero's legacy into a holiday disaster.

After NCIS learns that the owner of Parker's favorite bakery is being blackmailed, they hatch a plan to save her from the perpetrators.

NCIS stages a fake wedding for two of its own in an attempt to take down the mob.

NCIS investigates the fatal poisoning of one of Kasie's forensic scientists.

NCIS investigates the case of a Navy Lieutenant found dead at a blood donation bank.

When Torres receives a text from Jimmy's daughter saying she has discovered a large sum of money near a Naval library, the team works together to investigate.

After a Navy Lieutenant's death reveals ties to Special Agent Sawyer, Torres and Knight uncover a murder linked to a wealthy family.

A girls' night out takes an unexpected turn when NCIS is called to investigate the motive of a possible arsonist.

After NCIS captures the hitman known as "The Poet," the team races to uncover who ordered the assassination of a Navy chief.

When a trio of combat vets are found murdered in a D.C. motel room, NCIS tracks down a suspect who refuses to talk to anyone but Sam Hanna.

McGee's career and credibility are on the line when he investigates the Deputy Director for corruption.

As NCIS investigates a dangerous connection between the Nexus cartel and Parker's longtime nemesis, mob boss Carla Marino, the team uncovers a high-stakes plot involving stolen nuclear material.