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.

Torres receives intel from a confidential informant regarding top secret naval information that's at risk of being sold.

NCIS investigates a cuddle related to a car that begins driving on its own. Also, Parker is still seeing visions of Lily.

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