E1 - Truth or Consequences

Aired: September 22, 2009

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.

E2 - Reunion

Aired: September 29, 2009

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.

E3 - The Inside Man

Aired: October 06, 2009

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.

E4 - Good Cop, Bad Cop

Aired: October 13, 2009

When a Marine's body surfaces halfway around the world, the investigation forces Ziva to dig up a buried chapter of her life.

E5 - Code of Conduct

Aired: October 20, 2009

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.

E6 - Outlaws and In-Laws

Aired: November 03, 2009

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.

E7 - Endgame

Aired: November 10, 2009

With the team's help, Vance faces his demons while uncovering a complex relationship with a killer that puts his whole family in danger.

E8 - Power Down

Aired: November 17, 2009

The team literally finds themselves in the dark when the investigation into the death of a lieutenant is connected to a city-wide blackout.

E9 - Child's Play

Aired: November 24, 2009

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.

E10 - Faith

Aired: December 15, 2009

The body of the son of a retired Colonel-turned-preacher is found and the team have their suspicions that he may be the victim of a hate crime. Meanwhile, Gibbs gets a holiday visit from his father.

E11 - Ignition

Aired: January 05, 2010

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.

E12 - Flesh and Blood

Aired: January 12, 2010

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.

E13 - Jet Lag

Aired: January 26, 2010

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.

E14 - Masquerade

Aired: February 02, 2010

The team finds themselves in a race against time when a terrorist group threatens to detonate a "dirty bomb" in the D.C. area.

E15 - Jack Knife

Aired: February 09, 2010

When a Marine is found dead, Gibbs, Fornell and the team hit the open road to bust an illegal trucking operation.

E16 - Mother's Day

Aired: March 02, 2010

Secrets arise when Gibbs former mother-in-law surfaces as a witness in a murder investigation.

E17 - Double Identity

Aired: March 09, 2010

Gibbs and the team investigate the shooting of a Marine and uncovers more to his life than anyone would have ever imagined.

E18 - Jurisdiction

Aired: March 16, 2010

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.

E19 - Guilty Pleasure

Aired: April 06, 2010

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.

E20 - Moonlighting

Aired: April 27, 2010

When an NCIS polygraph specialist's night job takes a dangerous turn, Gibbs, Fornell and the team have to uncover the truth.

E21 - Obsession

Aired: May 04, 2010

DiNozzo finds himself increasingly captivated by a woman he's never met while investigating the murder of her brother.

E22 - Borderland

Aired: May 11, 2010

The team tries to track down a serial killer, while Abby heads south of the border to give a speech with McGee in tow.

E23 - Patriot Down

Aired: May 18, 2010

When a colleague's murder sends shockwaves through the team, Gibbs uncovers a surprising link to the crime.

E24 - Rule Fifty-One

Aired: May 25, 2010

Gibbs heads to Mexico to face his demons and make a startling decision.