Season One of NCIS aired at 8:00 P.M. Eastern Standard Time (EST) in the United States.
The two backdoor pilot episodes, Ice Queen (episode) and Meltdown (episode) originally aired as a part of JAG Season 8 with both episodes being shown on April 22nd, 2003 and April 29th, 2003. Both episodes were later edited together to form a single hour long episode entitled NCIS: The Beginning, which aired between the fourth and the fifth episode of the first season on 21 October 2003.
Yankee White (episode), the premiere episode and the first ever episode of NCIS as a standalone series aired for the first time on September 23rd, 2003, nearly six months after "Ice Queen" and "Meltdown" had aired in April 2003.
The season premiered on September 23, 2003 and ended on May 25, 2004.
|Leroy Jethro Gibbs||Mark Harmon||An NCIS Special Agent in charge of the main NCIS Major Case Response Team.|
|Anthony DiNozzo||Michael Weatherly||The Senior Agent of the main NCIS Major Case Response Team and also the second-in-command.|
|Caitlin Todd||Sasha Alexander||A Secret Service Agent previously assigned to the Presidential Protection Detail on Air Force One and who is now an NCIS Special Agent as well as Tony DiNozzo's partner.|
|Abigail Sciuto||Pauley Perette||A Goth who is also the Chief Forensic Scientist and who also works for the NCIS Major Case Response Team.|
|Vivian Blackadder||Robyn Lively||Former NCIS Special Agent who was DiNozzo's partner in the episodes, Ice Queen (episode) and Meltdown (episode).|
|Donald Mallard||David McCallum||NCIS's Chief Medical Examiner.|
In the two pilot episodes, Ice Queen (episode) and Meltdown (episode) that aired as part of JAG (series) Season 8, the majority of the NCIS team were introduced including DiNozzo's partner, Agent Vivian Blackadder played by American actress, Robyn Lively.
Unfortunately, Blackadder didn't test well with the TV audiences and as such, Lively was released from her contract and the character was dropped from the series with the circumstances surrounding her disappearance still unknown to this day.
As such, Caitlin Todd played by American actor, Sasha Alexander was created instead with the character's debut appearance occurring in the Season 1 premiere episode, Yankee White (episode) which first aired on September 23, 2003, marking the debut of NCIS as a solo series.
When the pilot episodes were edited together into a single episode, Donald Bellisario and Don McGill both made the decision not to re-shoot the story with Sasha Alexander's character of Kate Todd, and to leave Vivian Blackadder in the episode.
The result was that the pilot was condensed from two one hour episodes down into a single hour long episode entitled NCIS: The Beginning (episode), which aired on October 21st 2003 as the fifth episode of the first season.
When NCIS went into regular production, it was called "NAVY CIS" which was later dropped, resulting in the series being named "NCIS".
- NCIS Season 1 aired alongside JAG Season 9.
|Pilot||-||Ice Queen (episode) (JAG)||April 22 2003.||NCIS investigate the death of a former JAG officer and one of the JAG lawyers emerges as a possible suspect. As they juggle a murder case, NCIS must also break a terrorist who could have information concerning an upcoming terrorist attack. This episode is also the backdoor pilot episode for NCIS and also introduced NCIS Special Agents Leroy Jethro Gibbs, Anthony DiNozzo and Vivian Blackadder as well as Forensic Scientist Abigail Sciuto, Medical Examiner Dr. Donald Mallard and NCIS Director Thomas Morrow.|
|-||Meltdown (episode) (JAG)||April 29 2003.||As the NCIS team investigate Lieutenant Singer's death as well as the upcoming trial which will involve Rabb and various members of both the NCIS and JAG teams testifying, NCIS race against time to stop a possible terrorist attack from occurring. This is the second and final part of the two-part backdoor episode. This episode also marked the debut appearance of Lieutenant Lieutenant Commander Faith Coleman played by Alicia Coppola and the final appearance of NCIS Special Agent Vivian Blackadder.|
|-||NCIS: The Beginning (episode) (JAG)||October 21 2003.||A modified version of the two pilot episodes, in which the two episodes were condensed to form a single episode. The modified episode was aired as a part of the series proper. Even though the pilot episodes were edited together into a modified form, when determining the episode count for both series Donald P. Bellisario and the network decided that this episode should be classed as a rebroadcast of a JAG episode which aired outside its normal time slot.|
|1||1||Yankee White (episode)||September 23 2003.||NCIS investigate the death of a Navy Commander who died after having lunch with the President of the United States on board Air Force One and soon realize that a terrorist may be responsible. Series Premiere and also the first ever episode of NCIS as a stand-alone series. This episode marks the introduction of Secret Service Agent Caitlin Todd, FBI Agent Tobias Fornell, ME assistant Gerald Jackson, and the Mysterious Red-Head.|
|2||2||Hung Out to Dry (episode)||September 30 2003.||The NCIS team investigate the death of a Marine who died during a night-training jump but the team discover that it may actually be a murder while Kate Todd adjusts to joining the NCIS team. This episode also marks a crossover with NCIS's parent series, JAG and marks the first appearance of Bud Roberts Jr..|
|3||3||Seadog (episode)||October 7 2003.||The bodies of two drug dealers and a Navy Commander wash up on a beach, prompting NCIS to investigate where they soon realize that something else much worse than drug smuggling is going on.|
|4||4||The Immortals (episode)||October 14 2003.||The NCIS team investigate when the body of a young Seaman is discovered in the ocean and evidence is soon uncovered, suggesting that a biological attack may occur on the U.S.S. Foster, the Navy ship where the Seaman was stationed.|
|5||5||The Curse (episode)||October 28 2003.||The mummified remains of a Navy Lieutenant are discovered in a sealed cargo pod, prompting NCIS to investigate. As the case progresses, Kate develops an emotional bond towards the victim's family and vows to ensure that the family get the Lieutenant's death benefits.|
|6||6||High Seas (episode)||November 4 2003.||A former member of the Major Case Response Team contacts Gibbs for help after two sailors stationed on board the USS Enterprise overdose meth despite the sailors claiming never to have taken the drug. This episode marks the debut appearance of NCIS Special Agent Stan Burley.|
|7||7||Sub Rosa (episode)||November 18 2003.||When a badly disfigured body is discovered on the Norfolk Naval Base, NCIS investigate and work with a young Agent with the team soon discovering that the personnel of the U.S.S. Philadelphia may be in grave danger from a possible biological attack. This episode marks the debut appearance of NCIS Special Agent Timothy McGee.|
|8||8||Minimum Security (episode)||November 25 2003.||A Petty Officer's death and the discovery that he had emeralds inside his stomach sends the NCIS team to Guantanamo Bay, Cuba as they seek to find out what happened while also attempting to stop a possible terrorist plot as well.|
|9||9||Marine Down (episode)||December 16 2003.||The team investigate when a supposedly dead Marine contacts his wife with the team soon discovering that a rogue CIA agent is responsible.|
|10||10||Left for Dead (episode)||January 6 2004.||A woman digs herself out of her grave in Rock Creek Park, claiming to have knowledge of a bomb on board a Navy ship. As the team try to piece together what happened as well as the truth of Jane Doe's statements, Kate takes the woman under her wing, unaware that the woman has plans that could end terribly for everyone.|
|11||11||Eye Spy (episode)||January 13 2004.||NCIS investigate when the body of a Commander is found on the beach and as they investigate, the team uncover a plot of betrayal and murder.|
|12||12||My Other Left Foot (episode)||February 3 2004.||NCIS investigate when the single leg of a Marine is discovered in a dumpster is Clarksburg, West Virginia and they meet a doctor and her daughter who may know more than they're letting on.|
|13||13||One Shot, One Kill (episode)||February 10 2004.||NCIS race to stop a sniper from targeting and killing various Marine recruiters in the Washington D.C. area.|
|14||14||The Good Samaritan (episode)||February 17 2004.||NCIS investigate the death of a Commander in Grayson County and soon discover that they're not only dealing with one serial killer but two..|
|15||15||Enigma (episode)||February 22 2004.||Gibbs investigates when he discovers that his former Commanding Officer is being hunted by the FBI and as the NCIS team investigate, they soon find themselves uncovering a possible conspiracy that is connected to the death of an FBI agent.|
|16||16||Bête Noire (episode)||March 2 2004.||NCIS face a battle on their hands when an unknown terrorist invades the morgue and takes Ducky, Gerald and eventually Kate hostage.|
|17||17||The Truth Is Out There (episode)||March 16 2004.||NCIS investigate the death of a Petty Officer and discover that one of the victim's friends may be the true killer.|
|18||18||UnSEALeD (episode)||April 6 2004.||NCIS investigate when a former Navy SEAL convicted of killing his wife escapes from Leavenworth.|
|19||19||Dead Man Talking (episode)||April 27 2004.||NCIS investigate when Agent Christopher Pacci is murdered while working on a cold case.|
|20||20||Missing (episode)||May 4 2004.||NCIS are called to investigate the disappearance of a Marine and soon discover that an unlikely person has become a serial killer hellbent on revenge. This also marks the debut appearance of James Palmer.|
|21||21||Split Decision (episode)||May 11 2004.||The NCIS investigate the death of a Marine and finds themselves caught in an operation that ATF are carrying out.|
|22||22||A Weak Link (episode)||May 18 2004||NCIS investigate the death of a Lieutenant and a Navy SEAL and find themselves under pressure to wrap up the investigation as soon as possible due to the fact that the dead Lieutenant's team are due to embark on a hostage rescue situation.|
|23||23||Reveille (episode)||May 25 2004||The mysterious terrorist from Bête Noire (episode) returns, leading to consequences for one member of the NCIS team. This is also the Season 1 finale episode.|
- From The Region 2 DVD version*
"NCIS: The First Season features an elite team of special agents who operate outside the military chain of command. Led by Special Agent Leroy Jethro Gibbs (Mark Harmon), a tough, highly skilled investigator who's willing to bend the rules to get the job done, this tight-knit crew travel the world investigating everything from murder to espionage to terrorism and kidnapping in this unique set featuring all 23 pulse-pounding episodes this unique show that's "taught, smart and wonderfully unpredictable".
- Available only on the Region 1 DVD:
- N.C.I.S. Creating Season 1.
- N.C.I.S. Building the Team.
- N.C.I.S. Defining the Look.
- Audio Commentary- Yankee White Co-Creator/Executive Producer/Writer/Director Donald P. Bellisario.
|Seasons of NCIS|
|Season One ♦ Season Two ♦ Season Three ♦ Season Four ♦ Season Five ♦ Season Six ♦ Season Seven ♦ Season Eight ♦ Season Nine ♦ Season Ten ♦ Season Eleven ♦ Season Twelve ♦ Season Thirteen ♦ Season Fourteen ♦ Season Fifteen|