Season 1, Episode 1: Yankee WhiteOriginal Air Date—23 September 2003
A naval officer dies on board Air Force One of an apparent stroke after eating with the president. Secret Service, F.B.I. and N.C.I.S all want to take charge of the investigation to determine if it was murder or natural causes.
Season 1, Episode 2: Hung Out to DryOriginal Air Date—30 September 2003
A marine dies during a training jump. His parachute was sabotaged. NCIS tries to determine who did it. When they run into a legal issue, they call on Lt Bud Roberts from J.A.G.
Season 1, Episode 3: SeadogOriginal Air Date—7 October 2003
A sailor is killed in an apparent drug deal gone bad. NCIS investigates to clear the sailors name.
Next US airings:
Season 1, Episode 4: The ImmortalsOriginal Air Date—14 October 2003
The NCIS team investigates world of online gaming after a reconstruction of a video game stunt gone bad, kills a sailor.
Season 1, Episode 5: The CurseOriginal Air Date—28 October 2003
The mummified remains of a sailor is found by a hunter. The sailor had been accused of stealing millions of dollars, but the money was never found. NCIS investigates to determine who really stole the money.
Season 1, Episode 6: High SeasOriginal Air Date—4 November 2003
After a Rota port nightclub visit, aircraft-carrier arresting gear operator petty officer first class Bobby Wilkes, on excessively demanding chief Reyes's team, is found naked in a restaurant freezer, in time to prevent permanent damage. He was high on methamphetamine without precedent and claims his drink must have been spiked. The team must get orientated in the ship's complex maze, causing various embarrassment to crew (especially opposite sex) and them. Tony feels theatened by the presence of his predecessor as Gibb's number two, beloved Stan Burley. Colleague Peter Shrewe has another speed incident, yet nobody every tested positive for drug aboard. Wilkes is murdered by infuse manipulation in the infirmary.
Season 1, Episode 7: Sub RosaOriginal Air Date—18 November 2003
When the body of a submariner is found in a vat of acid, Gibbs and Kate head below the waves in search of an impostor. Tony works with a young agent on land to investigate the sailor's history.
Season 1, Episode 8: Minimum SecurityOriginal Air Date—25 November 2003
A translator from Gitmo dies with emeralds in his stomach. NCIS investigates to find out which prisoner smuggled them in, and what he's after.
Season 1, Episode 9: Marine DownOriginal Air Date—16 December 2003
A marine widow receives a phone call from her "dead" husband on the day of his funeral. NCIS investigates to determine if it was a crank call or if it was really him.
Season 1, Episode 10: Left for DeadOriginal Air Date—6 January 2004
A Jane Doe crawls out of a shallow grave in a park, with virtually total amnesia caused by a blow on the head and the emotional trauma of live burial, unlikely to recover fast or completely, yet tells the police, which calls the NCIS, about a bomb on an unspecified US Navy ship. She wasn't raped but gets memory flashes, first about a church. She pretends to recall her name and address to grant the permission to leave the hospital, and then is taken in by Caitlin 'Kate' Todd who keeps trying to trigger her memory about the bomb. A magnetic hotel key and the chemicals required for a serious explosive are found in the grave. Micro-laser numbering traces the key to the Jackson hotel in Washington, notably Mr. Walter Richter's year long-leased suite; it contains his corps, fitting Jane Doe's description of her attacker, but he is dead too long and worked for a German bomb detection equipment company...
Season 1, Episode 11: Eye SpyOriginal Air Date—13 January 2004
A naval officer is killed on base on the beach. There are 2 witnesses to the crime, a sunbather, and a spy satellite that was watching the sunbather.
Season 1, Episode 12: My Other Left FootOriginal Air Date—3 February 2004
The severed leg of a Marine is discovered. The investigation takes a turn, when they discover the victim had already "died" a few years ago.
Season 1, Episode 13: One Shot, One KillOriginal Air Date—10 February 2004
When a Marine Recruiter is killed by a sniper, NCIS starts to investigate. When another recruiter is killed in another area, the FBI tries to take over the investigation. It's a race to find the sniper before another recruiter is killed.
Season 1, Episode 14: The Good SamaritanOriginal Air Date—17 February 2004
The body of a naval dentist is found bound and gagged alongside the road to the base. NCIS investigates with the help of a local Sheriff. As more people are killed in the same manner, they start searching for a serial killer.
Season 1, Episode 15: EnigmaOriginal Air Date—24 February 2004
Gibbs's former military C.O. is wanted by the F.B.I. Gibbs tries to find him first, and shuts out his team. But his agents stand by their boss.
Next US airings:
Season 1, Episode 16: Bête NoireOriginal Air Date—2 March 2004
A terrorist manages to infiltrate NCIS HQ. He takes Ducky, Gerald and Kate hostage. It's up to the rest of the team to find out what he's after.
Season 1, Episode 17: The Truth Is Out ThereOriginal Air Date—16 March 2004
A body falls out of the ceiling during a rave party. The victim was dressed after he was killed.
Season 1, Episode 18: UnSEALedOriginal Air Date—6 April 2004
A seal convicted of murdering his wife escapes from prison. He claims to have discovered who really killed his wife, and wants revenge. To catch him, NCIS must reopen the case, to figure out who he's after
Season 1, Episode 19: Dead Man TalkingOriginal Air Date—27 April 2004
An NCIS agent is murdered while tracking down a lead on a cold case. Now the team continues the investigation to find his murderer.
Season 1, Episode 20: MissingOriginal Air Date—4 May 2004
A marine disappears, a further investigation shows that other members of his former unit have been reported missing, then found after they were tortured/killed. Can they find the marine before he becomes the latest victim?
Season 1, Episode 21: Split DecisionOriginal Air Date—11 May 2004
A marine is killed with a rocket launcher. This leads to an investigation of Weapons trafficking. NCIS works with and ATF agent to get the Arms Dealers, and the Militia who was going to purchase them.
Season 1, Episode 22: The Weak LinkOriginal Air Date—18 May 2004
A Seal is killed in an apparent accident while training for a highly classified mission. NCIS investigates is discovers that it wasn't an accident. NCIS must quickly determine who killed him, or the mission will have to be aborted.
Season 1, Episode 23: ReveilleOriginal Air Date—25 May 2004
As Gibbs's obsession with the unknown terrorist hits its boiling point, the terrorist returns. Taking Kate hostage, he's on a mission to assassinate the Presidents of the U.S. and Israel. All is not as it seems though.