NCIS - Season 4 Episode Guides (2006)

When Jenny returns from her European trip, the entire NCIS team will be forced to take a Homeland Security polygraph test, and the deepest secrets of each agent are about to be revealed.

Episode Guide

Trojan Horse

Season 4, Episode 23 - Air Date: 5/8/2007

When Jenny has to attend an overseas conference, Gibbs is made acting director, but he prefers to ignore his duties and lead the investigation of the murder of a man, who was found dead in a taxi headed to the NCIS headquarters.

Episode Guide

In the Dark

Season 4, Episode 22 - Air Date: 5/1/2007

When a blind photographer shoots the body of a Petty Officer on film, the NCIS team uses his special insight to investigate the crime.

Episode Guide

Brothers In Arms

Season 4, Episode 21 - Air Date: 4/24/2007

Director Shepard makes a huge mistake by meeting a man alone to inform her about Le Grenouille, as their meeting turns into a murder of the informant.

Episode Guide

Cover Story

Season 4, Episode 20 - Air Date: 4/10/2007

McGee is under high pressure during the murder investigation of a Petty Officer based on the character for his latest book, with very little information to go on.

Episode Guide

Grace Period

Season 4, Episode 19 - Air Date: 4/3/2007

When a weekend call to the NCIS tip line from an unknown source about possible terrorist activity results in the death of two agents sent into a trap, the NCIS team will have to find out who were the people responsible with the help from Agent Paula Cassidy, who holds herself responsible for the tragedy.

Episode Guide

Iceman

Season 4, Episode 18 - Air Date: 3/20/2007

When a supposedly frozen to death Marine turns out alive on Ducky's autopsy table, the NCIS team has to find out about the victim's movements last few days to uncover what happened to him and who left him for dead.

Episode Guide

Skeletons

Season 4, Episode 17 - Air Date: 2/27/2007

When an explosion at a military cemetery mausoleum reveals a crypt full of a mixture of body parts, the NCIS team must inform the families of the victims, hoping to find a connection between the dismembered victims, and narrow down the suspects to find out who is behind the hideous crime.

Episode Guide

Dead Man Walking

Season 4, Episode 16 - Air Date: 2/20/2007

When a Navy Lieutenant becomes the victim of radiation poisoning, the NCIS team must find the person who's behind the crime.

Episode Guide

Friends & Lovers

Season 4, Episode 15 - Air Date: 2/13/2007

When a dead body of a sailor is found in an abandoned part of the town, all the evidence seem to point that the person died from unintentional drug overdose, but when the team uncovers more evidence, it turns out to be a murder.

Episode Guide

Blowback

Season 4, Episode 14 - Air Date: 2/6/2007

After catching an international arms dealer, the NCIS team learns that Navy's highly classified weapons system will be sold to "La Grenouille," an important arms dealer.

Episode Guide

Sharif Returns

Season 4, Episode 13 - Air Date: 1/23/2007

When the NCIS team learns that the missing 10 kilograms of highly toxic chemical weapons are now in the hands of Mamoun Sharif, a wanted terrorist, they will have to find a way to find the man and stop him before it's too late with the aid from Army Lt.

Episode Guide

Suspicion

Season 4, Episode 12 - Air Date: 1/16/2007

When a high-level Marine intelligence officer is found murdered in a small motel room, the NCIS team must find the person who murdered him.

Episode Guide

Driven

Season 4, Episode 11 - Air Date: 12/12/2006

When a robotic vehicle named "Otto," a part of a high level project of the Department of Defense, causes a death of a Navy Lieutenant, and then later almost kills Abby, the NCIS team must find out who sabotaged the vehicle and murdered the Navy Lieutenant.

Episode Guide

Smoked

Season 4, Episode 10 - Air Date: 11/28/2006

When a burnt and mummified body of a missing and wanted person is found on a Marine base, in a furnace, NCIS must work with FBI.

Episode Guide

Twisted Sister

Season 4, Episode 9 - Air Date: 11/21/2006

McGee breaks the rules, risking his NCIS job, to help his sister Sara, who shows up disoriented and bloodied.

Episode Guide

Once A Hero

Season 4, Episode 8 - Air Date: 11/14/2006

When an honored Marine veteran is found dead in a hotel, the NCIS team must find out what happened to him.

Episode Guide

Sandblast

Season 4, Episode 7 - Air Date: 11/7/2006

When a Marine Colonel dies in an explosion at a military golf course, the NCIS team must investigate a suspected terrorist attack with the help from the Army Criminal Investigative Division (CID).

Episode Guide

Witch Hunt

Season 4, Episode 6 - Air Date: 10/31/2006

It's Halloween and the NCIS team is busy investigating a ransom case. A Marine's daughter has been kidnapped after the kidnapper attacked a Marine in his home.

Episode Guide

Dead and Unburied

Season 4, Episode 5 - Air Date: 10/17/2006

When a missing Lance Corporal is found dead in a vacant house, the NCIS team discovers that he was buried in the backyard and then exhumed.

Episode Guide

Faking It

Season 4, Episode 4 - Air Date: 10/10/2006

After police pull over a driver and arrest him for a concealed weapon, a car crashes into their patrol car with a dead man behind the wheel.

Episode Guide

Singled Out

Season 4, Episode 3 - Air Date: 10/3/2006

An abandoned car is found full of blood, registered to a missing Navy lieutenant. The NCIS team learns that the missing lieutenant was profiling men, trying to find a perfect man for herself.

Episode Guide

Escaped

Season 4, Episode 2 - Air Date: 9/26/2006

Gibbs is forced to come back out of his retirement to help Fornell, who is being threatened by a convict that escaped from prison.

Episode Guide

Shalom

Season 4, Episode 1 - Air Date: 9/19/2006

When Ziva accidentally witnesses a political assassination, she must surrender to the FBI and deal with the consenquences without Gibbs's help, who is now enjoying his retirement.

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Angel of Death

Trojan Horse

In the Dark

Brothers In Arms

Cover Story

Grace Period

Iceman

Skeletons

Dead Man Walking

Friends & Lovers

Blowback

Sharif Returns

Suspicion

Driven

Smoked

Twisted Sister

Once A Hero

Sandblast

Witch Hunt

Dead and Unburied

Faking It

Singled Out

Escaped

Shalom

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