NCIS (:

NCIS, formerly known as NCIS: Naval Criminal Investigative Service, is an American police procedural drama television series revolving around a fictional team of special agents from the Naval Criminal Investigative Service, which conducts criminal investigations involving the U.S. Navy and Marine Corps.

The concept and characters were initially introduced in a two-part episode of the CBS series JAG (JAG episodes 8.20 and 8.21). The show, a spin-off from JAG, premiered on September 23, 2003 on CBS and, to date, has aired eight full seasons and has gone into syndicated reruns on USA Network, Cloo (formerly Sleuth), and Ion Television. Donald Bellisario, who created JAG as well as the well-known series Airwolf, Magnum, P.I., and Quantum Leap, is co-creator and executive producer of NCIS.

NCIS was originally referred to as Navy NCIS during season one; however, the word "Navy" was later dropped from the title as it was redundant. In season seven, NCIS was joined by a spin-off series, NCIS: Los Angeles, starring Chris O'Donnell and LL Cool J.

On February 3, 2011, NCIS was renewed by CBS for a ninth season after receiving series-high ratings the night before.^[That same year, NCIS was voted as America’s favorite television show