September 22, 2009 8:00 pm
As the hunt for Ziva's replacement begins, Gibbs and his remaining team members must head back to work with the past still weighing heavily on their minds.
September 29, 2009 8:00 pm
The team discovers the bizarre death of a Marine and his two friends may be linked to their past, but its Gibbs who ends up taking a trip down memory lane.
October 6, 2009 8:00 pm
The team must take a second look into the death of a lieutenant after the blogger who accused them of a cover-up ends up dead.
October 13, 2009 8:00 pm
When a Marine's body surfaces halfway around the world, the investigation forces Ziva to dig up a buried chapter of her life.
October 20, 2009 8:00 pm
When a Marine known for his practical jokes is found dead on Halloween Eve, the NCIS team discovers that the victim's "good-natured" pranks may have inspired ghoulish retribution. Meanwhile, Ziva tries to adjust to her new role on the team.
November 3, 2009 8:00 pm
A murder investigation prompts Gibbs and the team to play family counselor to his former mentor, Mike Franks, in the hopes of preventing a bloody international conflict.
November 10, 2009 8:00 pm
With the team's help, Vance faces his demons while uncovering a complex relationship with a killer that puts his whole family in danger.
November 17, 2009 8:00 pm
The team literally finds themselves in the dark when the investigation into the death of a lieutenant is connected to a city-wide blackout.
November 24, 2009 8:00 pm
Dead Marine's day job at a government think tank leads Gibbs and the team into the life of a 12-year-old prodigy who may be the killer's next target.
December 15, 2009 8:00 pm
When the enlisted son of retired Colonel-turned-preacher is found dead, the team believes he may be the victim of a hate crime. Meanwhile, Gibbs' father comes for a holiday visit.
January 5, 2010 8:00 pm
When a Navy pilot is found dead under strange circumstances in a secluded area, the team finds themselves battling a no-nonsense attorney with a hidden agenda.
January 12, 2010 8:00 pm
Gibbs is worried about Tony's ability to handle his job when Tony's father turns out to be linked to their newest investigation, an assassination attempt on a foreign prince.
January 26, 2010 8:00 pm
While on the flight back from Paris, Tony and Ziva realize that their assignment to protect a government witness in an embezzlement case is in great danger when they learn that an assassin is located on the same flight.
February 2, 2010 8:00 pm
The team finds themselves in a race against time when a terrorist group threatens to detonate a "dirty bomb" in the D.C. area.
February 9, 2010 8:00 pm
When a Marine is found dead, Gibbs, Fornell and the team hit the open road to bust an illegal trucking operation.
March 2, 2010 8:00 pm
Secrets arise when Gibbs former mother-in-law surfaces as a witness in a murder investigation.
March 9, 2010 8:00 pm
Gibbs and the team investigate the shooting of a Marine and uncovers more to his life than anyone would have ever imagined.
March 16, 2010 8:00 pm
The team discovers striking similarities between themselves and their CGIS (Coast Guard Investigative Services) counterparts when a Navy diver seeking sunken treasure is found dead.
April 6, 2010 8:00 pm
The death of a Navy officer leads Gibbs and the team into the world of high-priced call girls, relying on D.C. Madam Holly Snow to help them catch a killer.
April 27, 2010 8:00 pm
When an NCIS polygraph specialist's night job takes a dangerous turn, Gibbs, Fornell and the team have to uncover the truth.
May 4, 2010 8:00 pm
DiNozzo finds himself increasingly captivated by a woman he's never met while investigating the murder of her brother.
May 11, 2010 8:00 pm
The team tries to track down a serial killer, while Abby heads south of the border to give a speech with McGee in tow.
May 18, 2010 8:00 pm
When a colleague's murder sends shockwaves through the team, Gibbs uncovers a surprising link to the crime.
May 25, 2010 8:00 pm
Gibbs heads to Mexico to face his demons and make a startling decision.