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1. Bölüm The NCIS team uncover a huge secret, as their mission to capture La Grenouille comes to an explosive and deadly conclusion.
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2. Bölüm During an autopsy, Ducky makes a startling discovery that turns a murder of a Petty Officer into a search for a missing infant.
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3. Bölüm Lt. Colonel Mann joins Gibbs in an investigation of the murder of a Marine Captain who had access to highly classified information. Things get very personal for Gibbs when one of the witnesses in the case turns out to be one of his ex-wives.
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4. Bölüm When Ducky realizes that one of his cadavers used for research is actually a victim of murder, the NCIS team identify him as a criminal genius who is capable of deleting the past.
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5. Bölüm The NCIS team are called in to stop a Naval officer from committing suicide by jumping off a rooftop, but when the suicide attempt turns into a murder, the NCIS team will have to find out who did it.
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6. Bölüm While investigating a mysterious death on a top-secret Naval research ship at sea, the NCIS team board the abandoned ship and find a deadly secret that may cost them their lives.
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7. Bölüm Gibbs finds himself emotionally challenged when he agrees to investigate a crime connected to a friend of his daughter, who passed away years ago, and the investigation leads to a shocking conclusion.
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8. Bölüm A murder investigation of a Navy Admiral takes a shocking turn when a woman, a political refugee, returns home to search for her husband.
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9. Bölüm The NCIS team have to babysit a nine-year-old son of a missing man, a survivalist who is somehow connected to a cold case murder. The investigation leads the team into the wilderness, where they discover a shocking truth about the man's past.
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10. Bölüm While trying to track down a delusional and violent Marine who thinks he's still in Iraq, the NCIS team learn that the man has been the subject of a secret experiment - and it comes with a high price to pay.
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11. Bölüm After a young Muslim Marine is murdered near his Mosque, Ducky refuses to perform an autopsy due to his religious beliefs. The NCIS team try to talk to the father of the deceased, and they send McGee to plant a bug in the Mosque, only to discover that the FBI already planted their own bug.
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12. Bölüm The NCIS team go on a stakeout in a warehouse to catch a suspected thief of a high-tech Naval radar, but they accidentally end up witnessing a murder.
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13. Bölüm When a dog owner is found murdered, the NCIS team must determine if his dog committed the murder or not, and Abby decides to fight for the dog's life by trusting her instinct about the dog's innocence.
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14. Bölüm The dead body of La Grenouille surfaces and the entire NCIS is put under investigation by the FBI, with Jenny as the prime suspect for his murder.
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15. Bölüm Two members of the NCIS team are sent to Baghdad to investigate a mortar attack that turned into a murder investigation.
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16. Bölüm While on an undercover mission, Ziva's life is put in grave danger when the serial killer she's been tracking becomes suspicious of her.
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17. Bölüm Palmer is put in grave danger when he becomes the target of an anonymous murderer, whom only he can recognize.
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18. Bölüm When a former NCIS agent is found dead, the entire team is put in danger as they hunt after the killer.
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19. Bölüm When one of their own is killed, the team must find the killer before they get to another member of the team, Gibbs. In an emotional investigation, the team tries to stay together, against the wishes of Assistant Director Vance.