NCIS season 4
NCIS season 4: 24 listed episodes, with episode titles, original air dates and optional synopses.
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Season 4 · Episode 1
Shalom
· 60 min
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With Gibbs retired and boat-building in Mexico, the NCIS team must learn to work without him when Ziva is wanted by the FBI after she witnesses a political assassination.
Season 4 · Episode 2
Escaped
· 60 min
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Gibbs is temporarily reinstated at NCIS when his friend's life is threatened by an escaped convict.
Season 4 · Episode 3
Singled Out
· 60 min
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The NCIS team is called to investigate a bloody, abandoned car registered to a missing Navy lieutenant.
Season 4 · Episode 4
Faking It
· 60 min
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Gibbs and the team investigate when the body of a Petty Officer is found in a car shot at close range.
Season 4 · Episode 5
Dead and Unburied
· 60 min
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The NCIS team is called to investigate when a real estate agent finds the body of a missing Lance Corporal is found in a vacant house.
Season 4 · Episode 6
Witch Hunt
· 60 min
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Gibbs and the NCIS team investigate when a Marine is attacked in his home and his daughter is apparently kidnapped on Halloween night.
Season 4 · Episode 7
Sandblast
· 60 min
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Gibbs and the team investigate a suspected terrorist attack at a military country club that kills a Marine Colonel.
Season 4 · Episode 8
Once a Hero
· 60 min
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When suspicious activity surrounds the death of a decorated Marine veteran, the NCIS team works to clear his name.
Season 4 · Episode 9
Twisted Sister
· 60 min
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Forgoing NCIS procedure, McGee risks his career when he takes matters into his own hands after his sister appears at his door bloodied and confused.
Season 4 · Episode 10
Smoked
· 60 min
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The NCIS team is called in when the burnt and mummified body of a wanted man is found in a furnace on a Marine base.
Season 4 · Episode 11
Driven
· 60 min
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The NCIS team investigates the death of a Navy Lieutenant who was working on a high level project for the Department of Defense.
Season 4 · Episode 12
Suspicion
· 60 min
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The NCIS team investigates when a high-level Marine intelligence officer is found murdered in a small town motel room.
Season 4 · Episode 13
Sharif Returns
· 60 min
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The NCIS team must track down a wanted terrorist who has obtained a missing, highly toxic chemical weapon.
Season 4 · Episode 14
Blowback
· 60 min
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Ducky comes out of the autopsy room and goes undercover to stop the illegal sale of the Navy's top secret weapons system.
Season 4 · Episode 15
Friends and Lovers
· 60 min
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The NCIS team investigates when the body of a young sailor is found in an abandoned building in a seedy part of town.
Season 4 · Episode 16
Dead Man Walking
· 60 min
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The NCIS team suspects foul play when a Navy Lieutenant is the victim of radiation poisoning.
Season 4 · Episode 17
Skeletons
· 60 min
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Gibbs and the team look for a potential serial killer when an explosion at a military cemetery mausoleum reveals a cache of dismembered human remains.
Season 4 · Episode 18
Iceman
· 60 min
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With the young Marine on life support, the NCIS team tracks his movements in the days before he was left for dead and discovers a secret trip to Baghdad via a private cargo plane and a link to Gibbs' past.
Season 4 · Episode 19
Grace Period
· 60 min
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The NCIS team discovers a tip about terrorist activity was a trap that resulted in the death of two agents. Blaming herself, Agent Cassidy works with the NCIS team to track down the people responsible.
Season 4 · Episode 20
Cover Story
· 60 min
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McGee is horrified when a Petty Officer on whom he based the character for his latest book is murdered. With little to go on, the team pushes McGee to figure out who could have accessed his secret manuscript.
Season 4 · Episode 21
Brothers in Arms
· 60 min
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Director Shepard takes a huge risk and agrees to meet an informant alone, but the meeting goes bad and her contact is killed. Gibbs and the NCIS team attempt to gather the information the man was going to supply or risk losing their nemesis once again.
Season 4 · Episode 22
In the Dark
· 60 min
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With little evidence, the team turns to Scott to re-create the scene of the crime using his heightened senses of hearing and scent to track down the Petty Officer's killer. Meanwhile, Tony and Gibbs struggle with personal relationships.
Season 4 · Episode 23
Trojan Horse
· 60 min
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Gibbs ignores the bureaucratic paperwork associated with his "acting" director duties and leads an investigation for a murder victim found in a taxi headed to NCIS headquarters. Meanwhile, Jenny discovers a secret about her past.
Season 4 · Episode 24
Angel of Death
· 60 min
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As the NCIS Director returns from a controversial European junket, and Gibbs and his agents reluctantly prepare for hastily announced Homeland Security polygraph tests, tightly woven secrets among the team unravel, revealing the biggest surprise in this Season of Secrets. In addition, an unarmed Dinozzo and his girlfriend are held captive by a merciless drug-dealer.
Episode information and images from TVmaze, used under CC BY-SA 4.0. Episode lists follow original airing order and omit specials. Dates checked September 10, 2026.