Episodes
Faking It
Series 4 / Episode 4
The murder of a petty officer who was working undercover as part of an arms operation leads the NCIS agents to a Russian spy, however Homeland Security claims that the spy is working for them.
Honor Code
Series 3 / Episode 7
When a 6-year-old boy informs the NCIS team that his father was kidnapped, the team discovers that the missing father is actually a Lt. Commander working on a secret project named Honor.
Under Covers
Series 3 / Episode 8
Ziva and Tony spend time together in a luxury hotel as they go undercover assuming the identities of hired assassins who are now dead. Gibbs soon discovers that his team is not the only one working on the case.
Dead and Unburied
Series 4 / Episode 5
The decomposing body of a missing marine is found propped up in a chair in an abandoned house, where it was placed after being dug up from the backyard.
Witch Hunt
Series 4 / Episode 6
On Halloween, a marine is attacked and his wife and daughter are kidnapped. The evidence suggests that a man with whom the wife had an affair may be responsible.
Sandblast
Series 4 / Episode 7
When a Marine Colonel dies in an explosion at a military golf course, the NCIS team investigate a suspected terrorist cell with the help from the Army Criminal Investigative Division.
Semper Fidelis
A security breach at the SecNav's residence leads to the death of an ICE agent, 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.
Once A Hero
Series 4 / Episode 8
A decorated former marine falls to his death from a balcony during a gathering of dignitaries in a Washington hotel.
Twisted Sister
Series 4 / Episode 9
McGee risks his NCIS job to help his sister Sarah, who shows up disoriented and bloodied. When he goes to her college to look for answers, he sees the NCIS team there inspecting the body of a dead sailor.
Frame-Up
Series 3 / Episode 9
Tony is accused of murdering a woman whose body was found at Quantico. All the evidence proves that Tony is guilty, so the team must go about trying to prove his innocence.
Probie
Series 3 / Episode 10
While on duty, McGee kills a man who is later discovered to be an undercover police officer. When the director decides to investigate the situation, the NCIS team is forced to prove McGee's innocence.
Smoked
Series 4 / Episode 10
The team investigate the discovery of mummified remains on a Marine base. When the man is suspected of being a serial killer, the NCIS team are forced to team up with the FBI on the case.
Driven
Series 4 / Episode 11
The agents investigate the death of a Navy lieutenant who died from carbon-monoxide poisoning in the robotic vehicle she helped develop. It appears the machine was sabotaged to make her death look like suicide.
Suspicion
Series 4 / Episode 12
A Marine intelligence officer is murdered in a hotel in a small town, but the team's investigation is hampered by local authorities who disrupted the crime scene and performed an autopsy before the agents arrived.
Aliyah
Ziva's homecoming to Israel with 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 shockwaves through NCIS.
Sharif Returns
Series 4 / Episode 13
The discovery of the body of a marine who worked with chemical weapons leads the agents to an old nemesis, explosives expert and terrorist Mamoun Sharif.
Blowback
Series 4 / Episode 14
After catching an international arms dealer, the NCIS team learns the Navy's highly classified weapons system will be sold to an important arms dealer. To stop the transaction, the team will send in Ducky undercover.
Model Behavior
Series 3 / Episode 11
While filming a reality show on a Marine base, a supermodel dies forcing the NCIS team to investigate. Meanwhile, Jenny is disturbed by Gibbs when he doesn't want to attend an award ceremony in his honour.
Boxed In
Series 3 / Episode 12
While on an investigation at a shipyard, Tony and Ziva disappear and it's up to NCIS to find them. Whilst trapped in a container Tony and Ziva find evidence which could help them solve the case.
Friends & Lovers
Series 4 / Episode 15
When a dead body of a sailor is found all the evidence seem to point that the person died from a drug overdose, but when the team uncovers more evidence, it turns out to be murder.
Dead Man Walking
Series 4 / Episode 16
An inspector with the International Atomic Energy Agency comes into NCIS headquarters and asks the agents to solve a murder, his own. The man is dying from being poisoned and wants to find the culprit.
Skeletons
Series 4 / Episode 17
When an explosion at a military cemetery reveals a crypt full of a mixture of body parts, the NCIS team must inform the families of the victims and find out who is behind the hideous crime.
Iceman
Series 4 / Episode 18
A marine who was believed to have frozen to death wakes up on Ducky's autopsy table. A probe into his past reveals a secret trip to Baghdad on a private cargo plane and a link to Gibbs' past.
Grace Period
Series 4 / Episode 19
A call to an NCIS tip line on possible terrorists turns out to be a trap that leads to the death of two agents. The team try to track down those responsible with help from an agent who blames herself for the tragedy.
Deception
Series 3 / Episode 13
A Commander in charge of a shipment of fuel rods for nuclear power stations disappears. The NCIS team must solve the case in time, before the person who kidnapped the Commander finds the location of the fuel rods.
Light Sleeper
Series 3 / Episode 14
The NCIS team investigates the murder of two Marine wives, and must find the murderers before they attack their next target, another woman.
Cover Story
Series 4 / Episode 20
McGee is under high pressure during the murder investigation of a Petty Officer who he based a character on in his latest novel.
Brothers In Arms
Series 4 / Episode 21
Director Shepard, still searching for the arms dealer Le Grenouille, meets an informant who ends up getting killed. The agents try to find out what the man was ready to reveal and finally hunt down their enemy.
In The Dark
Series 4 / Episode 22
A blind photographer accidentally captures the murder of a petty officer, and the team use the man's special insights to help in the investigation. Meanwhile, both Gibbs and Tony are having relationship trouble.
Trojan Horse
Series 4 / Episode 23
Gibbs is made temporary acting director, but preferring to be in the field, he leads his team's investigation of the murder of a woman who was killed in a taxi heading toward NCIS headquarters.
Angel of Death
Series 4 / Episode 24
In the gripping season finale, an unarmed Tony and Jeanne are held captive by a drug dealer. Meanwhile, the agents are forced to take a polygraph test, and the deepest secrets of each agent will be revealed.
Head Case
Series 3 / Episode 15
While discovering an illegal automotive chop shop, the NCIS team stumbles upon a severed head of a Marine, hidden in one of the cars.
Family Secret
Series 3 / Episode 16
When an ambulance explodes that is carrying the remains of a Marine, the NCIS team is called in to investigate what actually happened. What dark secrets will they uncover about the family of the dead Marine?
Bury Your Dead
Series 5 / Episode 1
The NCIS team uncovers a huge secret, as their mission to capture La Grenouille comes to an explosive and deadly conclusion
Family
Series 5 / Episode 2
During an autopsy, Ducky makes a startling discovery that turns a murder of a Petty Officer into a search for a missing infant. Meanwhile, Tony has to deal with his feelings for Jeanne.
Ex-File
Series 5 / Episode 3
Gibbs works with Lt. Mann on the case of a murdered Marine captain, an investigation complicated by the fact that a witness is one of Gibb's ex-wives.
Identity Crisis
Series 5 / Episode 4
While examining a research cadaver, Ducky discovers the person was murdered and had ties to a criminal mastermind.
Leap of Faith
Series 5 / Episode 5
The NCIS team is called in to stop a naval officer from committing suicide by jumping off a rooftop, but when the suicide attempt turns into a murder, the NCIS team will have to find out who did it.
Ravenous
Series 3 / Episode 17
A Petty Officer's dog tags are found in a national forest by a group of teens. While searching for the campsite of the sailor, the NCIS team finds that there could be a serial killer hiding in the national forest.
Bait
Series 3 / Episode 18
The NCIS team must stop a teenage student from detonating a bomb attached to his body while taking the other students hostage at a Quantico base high school. As Gibbs enters the classroom, Tony is left in charge.
Chimera
Series 5 / Episode 6
While investigating a mysterious death on a top-secret naval research ship at sea, the NCIS team comes across an abandoned ship which contains a deadly secret that may cost them their lives.
Requiem
Series 5 / Episode 7
Gibbs finds himself on an emotional journey into his past when he agrees to help the childhood friend of his dead daughter.
Designated Target
Series 5 / Episode 8
A murder investigation of a Rear Admiral takes a shocking turn when a political refugee returns home to search for her husband.
Lost & Found
Series 5 / Episode 9
The NCIS team plays babysitter to a 10-year-old boy whose father is wanted in connection with a cold case murder.
Corporal Punishment
Series 5 / Episode 10
The NCIS team pays a heavy price when they try to track down a Marine who believes he is still in Iraq.