Ziva surprises Gibbs with a cryptic warning, prompting him to question why she remained underground for years while being presumed dead by family and friends, and what led to her return.

With their lives in danger, Gibbs and Ziva’s rogue investigation takes an unexpected turn when a possible terrorist plot is revealed.

After the body of a Marine Lieutenant is found hidden under an 18-wheeler, the NCIS team tracks the vehicle’s previous locations to pinpoint the crime scene and suspect.

The NCIS team links a bizarre crime scene at Arlington National Cemetery to a string of attacks on homeless veterans.

NCIS investigates Marine Corporal Laney Alimonte after evidence suggests she murdered her neighbor while being treated for insomnia by a hypnotherapist.

After a Petty Officer’s son is found murdered at his “welcome home from prison” party, evidence suggests Kasie’s lifelong best friend, Dante Brown, is the suspect.

While investigating a Marine’s murder, the NCIS team uncovers a labyrinth of live-streaming spy cameras hidden in the rooms of a Virginia motel.

The NCIS team investigates the murder of a musician in the Navy’s most elite band that performs at diplomatic events around the world.

The NCIS team investigates a Petty Officer's murder that was livestreamed on a popular gaming app.

Gibbs and the team help Ziva with the "one thing" she said she'd take care of before returning to her family.

The NCIS team investigates an F-18 crash and the subsequent disappearance of the pilot.

After a body is found at an unmanned aerial vehicle testing site, the NCIS team must determine if the death was murder or an accident.

After Torres and Bishop are victims of a hit-and-run, Torres fights for his life in the Intensive Care Unit.

The lead suspect in an NCIS murder investigation is a woman Gibbs' friend, Phillip Brooks, met on a dating site.

While investigating the suicide of a retired Navy officer who left a rare, valuable - and possibly stolen - coin to the National Museum of the Navy, the team imagines themselves in his life story in order to piece together how the coin ended up in his possession.

As the NCIS team investigates the death of a Navy officer murdered the same way as his parents a decade ago, they stumble across a storage container filled with dollhouses that display recreations of murder scenes.

The team searches for answers when the body of a well-regarded Navy technician in the Reserves is found floating in a lake where a popular community event is being held.

When Kasie and Jimmy are held hostage in a diner after a jewelry store robbery goes awry, they attempt to keep the other customers safe from the thieves.

The team tries to verify the identity of Joe Smith, who claims he served on the U.S.S. Arizona during the attack on Pearl Harbor, and wants to be buried there upon his death.