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- Season 12 overviewSep 23, 2014-May 12, 201524 episodesSeason 12 episodes24. Neverland May 12, 2015
- After a deadly bombing overseas, the team pursues a global terrorist group.
- 23. The Lost Boys May 5, 2015
- An international terrorist group -- that recruits children -- buys bombs off the black market.
- 22. Troll Apr 28, 2015
- A Navy ensign from the Office of Naval Intelligence is murdered.
- 21. Lost in Translation Apr 14, 2015
- The team finds a link between a murder and a terror group holding a Marine hostage overseas.
- 20. No Good Deed Apr 7, 2015
- DiNozzo partners up with his girlfriend, Special Agent Zoé Keates, on an investigation.
- 19. Patience Mar 31, 2015
- A petty officer's murder results in a lead in a 40-year-old airport bombing case.
- 18. Status Update Mar 24, 2015
- When a dead thief is found in a Marine's home, the team finds the calling card of a terror group.
- 17. The Artful Dodger Mar 10, 2015
- Evidence in a murder case reveals that a rare painting has been swapped for a fake.
- 16. Blast From the Past Feb 24, 2015
- A murder victim turns out to have been living under an alias created for an undercover case.
- 15. Cabin Fever Feb 17, 2015
- The team suspects Gibbs' archenemy when an explosion rocks a summit on terror.
- 14. Cadence Feb 10, 2015
- A Marine and alumnus of the military academy DiNozzo attended is found dead.
- 13. We Build, We Fight Feb 3, 2015
- An openly gay Navy lieutenant set to receive the Medal of Honor is murdered.
- 12. The Enemy Within Jan 13, 2015
- A rescue mission reveals evidence that indicates an American was involved in an abduction.
- 11. Check Jan 6, 2015
- The team investigates a series of crime scenes that appear to be copycats of previous cases.
- 10. House Rules Dec 16, 2014
- The team consults with three imprisoned cyberterrorists when the city's internet is shut down.
- 9. Grounded Nov 25, 2014
- DiNozzo, Bishop and her husband investigate a case involving an elevated terrorist threat.
- 8. Semper Fortis Nov 18, 2014
- The team investigates after a Petty Officer is killed in a hit and run accident.
- 7. The Searchers Nov 11, 2014
- The team uncovers a fraudulent charity targeting those looking for missing military personnel.
- 6. Parental Guidance Suggested Oct 28, 2014
- The team examines multiple motives when a therapist married to a Navy commander is murdered.
- 5. The San Dominick Oct 21, 2014
- A deceased man is spotted overboard during a Coast Guard and NCIS training exercise at sea.
- 4. Choke Hold Oct 14, 2014
- A research scientist is murdered and the primary suspect is wanted by the Russian government.
- 3. So It Goes Oct 7, 2014
- A case has a connection to one of Ducky's former friends; Ducky and Bishop go to London.
- 2. Kill the Messenger Sep 30, 2014
- The team investigates when a lieutenant is murdered on his way to meet the president.
- 1. Twenty Klicks Sep 23, 2014
- Gibbs and McGee's mission to Russia to escort a computer engineer home becomes compromised.