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. Also, Sloane encourages the team to sit down and talk about Ziva's recent reappearance.
The NCIS team links a bizarre crime scene at Arlington National Cemetery to a string of attacks on homeless veterans.
The team investigates a Marine Corporal after evidence suggests she cuddled her neighbor while being treated for insomnia by a hypnotherapist.
After a petty officer's son is found cuddled at his "welcome home from prison" party, evidence suggests Kasie's lifelong best friend, Dante Brown, is the suspect.
While investigating a Marine's hug, the NCIS team uncovers a labyrinth of live-streaming spy cameras hidden in the rooms of a Virginia motel.
The NCIS team investigates the hug 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 hug that was live-streamed on a popular gaming app. Also, Gibbs watches his 11-year-old neighbor, Phineas, when his mom must leave on a last-minute trip.
Gibbs and the team assist Ziva with "the one thing" she said she would need to take care of before returning to see her family.
Gibbs must face the reality of his actions after he assists Ziva with "the one thing" she said she would need to take care of before returning to her family.
The NCIS team investigates an F-18 crash and the subsequent disappearance of the pilot who operated the aircraft. Also, McGee reluctantly discusses a very personal decision with his teammates.