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Season 06
25 episodes
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E01
The murder of a Naval Petty Officer leads Gibbs to uncover a shocking connection between the case and Director Vance's decision to disband his team.
E02
While stationed on an aircraft carrier, DiNozzo finds that a Navy Lieutenant's apparent suicide may be connected to a larger, deadly scheme.
E03
The NCIS team becomes entangled in the world of Washington politics when a distinguished Senator turns to Gibbs for help in solving the murder of a young, female Naval officer.
E04
After two Marines are ambushed, the NCIS team finds the investigation leads back to Gibbs' hometown, where secrets about his past are revealed.
E05
The hunt for a marine's murderer puts Gibbs on a collision course with an old friend, FBI Agent Fornell.
E06
During the week of Halloween, a murderous psychopath taunts the team by using the Internet to leave clues to the next victim's identity.
E07
Gibbs second-guesses his own judgment when Vance assigns him a rookie to aid his team's investigation into a deadly bank robbery.
E08
Shocking revelation comes to light after the team is forced into playing a dangerous war game.
E09
The team must rely on information from some questionable individuals to stop a criminal bent on stealing government secrets.
E10
After a petty officer dies in a car crash, the team suspects foul play when their investigation leads them into the violent world of underground street fighting.
E11
While stuck working on a case over Christmas, the team searches for a suspect presumed dead.and begins to discover some startling personal revelations.
E12
McGee is held captive in a women's prison after a guard's murder leads to a takeover.
E13
After Ducky is stabbed at a crime scene, the team uncovers disturbing secrets from the good doctor's past.
E14
Slain sergeant's private life is on full display as the team must determine if a suspected act of treason lead to his death.
E15
While investigating the death of a Marine, the team finds themselves intertwined in an inner city gang war.
E16
Gibbs and DiNozzo reverse roles after a murder leads to one of Tony's old investigations being re-opened.
E17
The death of a NCIS agent leads Gibbs and Tony into the desert to locate a woman who holds the answer to the mystery.
E18
Boxer's death leads Vance to start up his own investigation, causing a sparring match with Gibbs.
E19
When a young boy finds a murder weapon, the team must trace ownership of the gun to find who used it last and who was murdered.
E20
Gibbs and the team must work with the shady Trent Kort to put away one of NCIS's most wanted.
E21
When a government scientist goes missing, Abby is recruited to carry on his work, but the team worries that she may meet the same fate as her predecessor.
E22
The body of a Marine leads Gibbs and McGee to the NCIS OSP division in Los Angeles, where a murder investigation quickly climbs to a matter of national security in which the two offices must work together to resolve. Meanwhile, Tony begins to snoop into Ziva's personal life.
E23
With the appearance of Mossad agent Michael Rivkin, Tony is forced to question Ziva's loyalty to NCIS. Meanwhile, in Los Angeles, Special Agent Callen goes undercover to try to catch a terrorist cell while OSP psychologist Nate Getz discovers the startling truth about Gibbs and Special Agent Lara Macy's relationship.
E24
After a security breach at the SecNav's residence leads to the death of an ICE agent, Gibbs and the team are forced to work with ICE and the FBI to find his killer. Meanwhile, Tony finally comes face-to-face with Michael Rivkin.
E25
Ziva's homecoming to Israel with Gibbs and the team is not a happy reunion with her father, the enigmatic and powerful head of Mossad. As tensions rise, Gibbs is forced to make a decision that sends shockwaves through NCIS.