第 6 季 共 25 集
播出时间：2008年9月24日
第 1 集 Last Man Standing
播出时间：2008年9月24日
When a petty officer is found murdered, Gibbs learns about the mysterious connection between the disbanding of his team and the case.
第 2 集 Agent Afloat
播出时间：2008年10月1日
DiNozzo's investigation into a Navy Lieutenant's apparent suicide takes a surprising and deadly turn when its seems that it might have a connection to a larger, deadly scheme.
第 3 集 Capitol Offense
播出时间：2008年10月8日
A distinguished senator asks Gibbs for help in solving the murder of a young female Naval officer.
第 4 集 Heartland
播出时间：2008年10月15日
When a murder investigation leads the team to Gibbs' hometown, secrets about his past are revealed.
第 5 集 Nine Lives
播出时间：2008年10月22日
Gibbs' hunt for the killer of a marine puts him on a collision course with an old friend.
第 6 集 Murder 2.0
播出时间：2008年10月29日
Gibbs and his team are searching for a cyber serial killer who takes videos of his victims. The team quickly finds out that the video's of the dead victims are false.
第 7 集 Collateral Damage
播出时间：2008年11月12日
A Navy bank has been robbed. NCIS is responsible for the investigation. One of the new recruits assigned to the fraud unit, Special Agent Dwayne Wilson, joins the team to help.
第 8 集 Cloak
播出时间：2008年11月19日
A strange delivery in a box arrived at the Navy facilities: The delivery driver and a Navy MP officer discover it is a sailor's corpse.<br />
<br />
A shocking revelation comes to light after the team is forced into playing a dangerous war game.
第 9 集 Dagger
播出时间：2008年11月26日
The team is forced to rely on information from questionable sources while trying to stop a criminal bent on stealing government secrets.
第 10 集 Road Kill
播出时间：2008年12月3日
The team investigates the death of a petty officer and discovers he may have been leading a violent secret life.
第 11 集 Silent Night
播出时间：2008年12月17日
During the week of Christmas, The Team is Forced to work overtime when they discover their prime suspect had been dead for 17 years.
第 12 集 Caged
播出时间：2009年1月7日
The NCIS team must reveal the truth behind the murder of a jail guard which resulted in a prison riot and McGee being held captive by the inmates.
第 13 集 Broken Bird
播出时间：2009年1月14日
Secrets from Ducky's clandestine past come to the forefront after he's attacked at a crime scene. The team uncovers disturbing secrets from the good doctor's past.
第 14 集 Love and War
播出时间：2009年1月28日
The team discovers a link between a sergeant's murder and his possibly treasonous private life.
第 15 集 Deliverance
播出时间：2009年2月11日
Demons of the past come back to haunt Gibbs when he finds a cryptic message waiting for him at a crime scene.
第 16 集 Bounce
播出时间：2009年2月18日
A murder prompts the reopening of one of Tony's old investigations, leading Gibbs and DiNozzo to reverse roles to solve the case.
第 17 集 South by Southwest
播出时间：2009年2月25日
When a fellow agent is murdered, the NCIS teams heads into the desert to locate a woman who might hold the answer to the mystery murder.
第 18 集 Knockout
播出时间：2009年3月18日
The death of a boxer leads Vance to borrow the NCIS team and start investigating his death, while Gibbs digs into Vance's past.
第 19 集 Hide and Seek
播出时间：2009年3月25日
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.
第 20 集 Dead Reckoning
播出时间：2009年4月1日
Gibbs and the team must work with the shady Trent Kort to put away one of NCIS's most wanted.
第 21 集 Toxic
播出时间：2009年4月8日
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.
第 22 集 Legend (1)
播出时间：2009年4月29日
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.
第 23 集 Legend (2)
播出时间：2009年5月6日
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.
第 24 集 Semper Fidelis
播出时间：2009年5月13日
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.
第 25 集 Aliyah
播出时间：2009年5月20日
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 shock waves through NCIS.
