When a Navy reservist returns home to find her husband missing and her living room covered in blood, she turns to the NCIS team to bring him home. Meanwhile, Tony suspects that Ziva is planning a risky move to avenge her father's death.
A massive storm brings the NCIS team aboard the USS Borealis, where everyone becomes a suspect once the crime scene proves that Mother Nature wasn't the only culprit. Tension builds when McGee discovers that his estranged father, Navy Admiral John McGee (Jamey Sheridan), was on board during the incident.
The wife of a Marine who specialized in K-9 bomb detection urges the NCIS team to investigate the recent death of her husband in Afghanistan. Meanwhile, Director Vance asks for the team's assistance as he interviews nannies.
A media frenzy surrounding an unidentified criminal prompts Gibbs' barber to question his son's involvement and ask for Gibbs' help in ruling out his son as a prime suspect.
The NCIS team races to track down Ducky and Jimmy after the two disappear while transporting a body from a crime scene.
On leave from NCIS while still grieving the loss of his wife and his kids' mother, Director Vance discovers unexpected personal information that causes him to question everything.
The NCIS team takes on a renowned hacker who could hold the key to tracking down the most-wanted cyber-terrorist in the world.
The NCIS team investigates a Marine's car accident and ignites some upsetting past memories for Abby as a young girl on the trail of her first "case."
In the aftermath of an event that strikes close to home, the NCIS team unites to seek answers and demand justice in order to protect their most vulnerable colleagues. Greg Germann guest stars.
While the NCIS team investigates the link to a dead journalist and a Navy petty officer, Ziva is taken aback by the sudden emotional visit by her father (Michael Nouri), who she hasn't seen in more than two years. While Ziva questions the purpose of her father's visit as the Director of Mossad, her father insists he is in the U.S. strictly to see his daughter for Shabbat dinner.
It's Christmas time and Tony DiNozzo can't decide if he'll be naughty or nice when his dad, Anthony DiNozzo, Sr., comes to town for a visit. Robert Wagner guest stars.
Gibbs teams up with FBI Agent Fornell (Joe Spano) on a joint NCIS/FBI investigation after Fornell becomes the target of a shooting, but they face an unexpected twist in the case when their mutual ex-wife, Diane Sterling (Melinda McGraw), gets involved. Meanwhile, rumors run wild among the group after Diane stays overnight at McGee's.
As the NCIS team investigates a teenage girl's abduction, Ziva and Abby work closely with her young friend who witnessed the kidnapping. As the investigation unfolds, Gibbs seeks help from a past contact, Miranda Pennebaker (Alex Kingston), a well-connected woman with questionable morals.
Gibbs continues to work with Captain Wescott (Brad Beyer) while he retraces his steps in order to help the NCIS team track down a terrorist.
When a Navy Lieutenant who recently returned home from the Middle East is found dead from a brutal attack, the NCIS team questions the victim's friend, Marine Captain Joe Wescott (Brad Beyer).
A petty officer is gunned down in a billionaire's Ferrari and the investigation leads the NCIS team to discover a link to a man Gibbs was named after. Billy Dee Williams guest stars and Ralph Waite reprises his roll as Gibbs' father.
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