NCIS is an American action police procedural television series, revolving around a fictional team of special agents from the Naval Criminal Investigative Service, which investigates crimes involving the U.S. Navy and Marine Corps.

In the United States, a special agent is usually a detective or investigator for a state, county, municipal, federal, or tribal government who primarily serve in investigatory roles.

The police procedural, or police crime drama, is a subgenre of detective fiction that attempts to convincingly depict the activities of a police force as they investigate crimes.

The United States Naval Criminal Investigative Service is the primary law enforcement agency of the United States Department of the Navy.


The concept and characters were initially introduced in two episodes of the CBS series JAG.

CBS is an American commercial broadcast television network that is a flagship property of CBS Corporation.


The show, a spin-off from JAG, premiered on September 23, 2003, on CBS.


To date it has aired for thirteen full seasons and has gone into broadcast syndication on the USA Network and Cloo.

Broadcasting syndication is the licensing of the right to broadcast television programs and radio programs by multiple television stations and radio stations, without going through a broadcast network.

USA Network is an American basic cable and satellite television channel that is owned by the NBCUniversal Cable division of NBCUniversal, itself a subsidiary of Comcast.

Cloo is a digital cable television channel with programming dedicated to the crime and mystery genres.


Donald P. Bellisario and Don McGill are co-creators and executive producers of the premiere member of the NCIS franchise.

Don McGill is an American television producer and writer who assisted with producing and even starred in some episodes of JAG, he also aided in the production and/or writing of such TV series as CSI, NUMB3RS, and NCIS.

Donald Paul Bellisario is an American television producer and screenwriter who created and sometimes wrote episodes for the TV series Magnum, P.I., Tales of the Gold Monkey, Airwolf, Quantum Leap, JAG, and NCIS.


It is the second longest-running scripted, non-animated U.S. primetime TV series currently airing, surpassed only by Law & Order: Special Victims Unit, and is the 15th longest-running scripted U.S. primetime TV series overall.

Law & Order: Special Victims Unit is an American police procedural, legal, crime drama television series set in New York City, where it is also primarily produced.


NCIS was originally referred to as Navy NCIS during season one; "Navy" was later dropped from the title as it was redundant.


In season six, a two-part episode led to a spin-off series, NCIS: Los Angeles.

NCIS: Los Angeles is an American action television series combining elements of the military drama and police procedural genres, which premiered on the CBS network on September 22, 2009, and stars Chris O'Donnell and LL Cool J. The series follows the exploits of the Los Angeles-based Office of Special Projects, an elite division of the Naval Criminal Investigative Service that specializes in undercover assignments.

Los Angeles, officially the City of Los Angeles and often known by its initials L.A., is the second-most populous city in the United States, the most populous city in California and the county seat of Los Angeles County.


A two-part episode during the eleventh season led to a second spin-off series, NCIS: New Orleans.

NCIS: New Orleans is an American television series combining elements of the military drama and police procedural genres that premiered on Tuesday, September 23, 2014, following its parent series NCIS.


While initially slow in the ratings, barely cracking the Top 30 in the first four seasons, by its sixth season, it became a top five hit, and has remained there since.


In 2011, NCIS was voted America's favorite television show.


The series finished its tenth season as the most-watched television series in the U.S. during the 2012–13 TV season.


On February 29, 2016, NCIS was renewed for its fourteenth and fifteenth seasons.


Season fourteen premiered on September 20, 2016, while Duane Henry, Jennifer Esposito, and Wilmer Valderrama joined the cast as series regulars, replacing departing original cast member Michael Weatherly.

Wilmer Eduardo Valderrama is an American actor, singer, producer and television personality, best known for the role of Fez in the sitcom That '70s Show and Carlos Madrigal in American horror television series From Dusk Till Dawn: The Series.

Michael Manning Weatherly, Jr., is an American actor and director best known for playing Anthony "Tony" DiNozzo on the television series NCIS from 2003 to 2016.

Jennifer Esposito is an American actress, author, baker, and health advocate.

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