Parental Guidance Suggested – A Navy commander’s wife is murdered and NCIS must determine whether her death is linked to her profession as a therapist or an act of terrorism after finding her husband’s name on a jihadist target list. Meanwhile, the team discuss Halloween costumes and Tony’s recent dating habits.
The San Dominick – Gibbs spots a dead man in the water during a joint Coast Guard and NCIS training exercise at sea. The investigation reveals the man is a missing crew member from a ship 60 nautical miles away. Upon boarding the ship for questioning, Gibbs discovers the vessel has been commandeered by pirates.
Choke Hold – The NCIS team is assigned to a joint terrorism task force by the Secretary of the Navy after a Naval research scientist is murdered and the chief suspect is wanted by the Russian government. Gibbs and DiNozzo run interference with task force leader Leia Pendergast.
So It Goes – Ducky returns to London after a case reveals a connection to his estranged childhood best friend. Agent Bishop accompanies him on the trip, and they interview his friend’s family and coworkers. Meanwhile, Ducky recalls the choices he made in the past and the impact they’ve had on his adult life.
Kill the Messenger – A Navy lieutenant is murdered on his way to a private meeting with the President. The NCIS team try to determine if the death was part of a recent series of muggings in the area or if it was a targeted hit to keep intelligence secrets.
Twenty Klicks – Season 12 begins with Gibbs and McGee traveling to Russia to escort home an NCIS computer engineer who is connected to classified intel. But the mission is compromised, and the trio go off the grid while being hunted by a Russian mercenary group. Back at home, the NCIS team race to find their missing colleagues.
Honor Thy Father – Season 11 ends with the NCIS team investigating a fire on a Navy ship that served as a secret detention site for indicted terrorists. The probe focuses on whether the blaze was accidental or an intentional diversion for an escape. Meanwhile, Gibbs visits his childhood home following news of his father’s passing.
The Admiral’s Daughter – DiNozzo is sent to Paris on a covert mission to bring home an admiral’s daughter, but he turns to the NCIS team for help when he encounters a controversial crime scene.
Shooter – A Marine photographer disappears prior to testifying in a high-profile Afghanistan murder case. The NCIS team investigate the homicide he witnessed and his current piece on military veterans who are homeless. Meanwhile, Abby tries to help a young homeless woman reconnect with her family.
Alleged – A Navy officer is found dead on a rural road. The investigation focuses on whether the victim was murdered as a result of a bar fight or because he knew too much about an attack on a female Navy officer. Meanwhile, DiNozzo and McGee start a juice cleanse to purge their bodies of impurities.