NCIS: Los Angeles: American TV Series

NCIS: Los Angeles Season 2 Episode 23 (Imposters) airs on Tuesday, May 10, 2011 at 9:00pm EDT on WCBS (CBS).
NCIS: Los Angeles (Naval Criminal Investigative Service: Los Angeles) is an American television series combining elements of the military drama and police procedural genres, which premiered on the CBS network on September 22, 2009. In the USA, the series airs following NCIS on Tuesdays. In Canada, the show is simulcast on the Global Television Network.
NCIS: Los Angeles is the first spin-off of NCIS, which itself was a spinoff of another CBS series, JAG. On October 7, 2009, CBS gave the series a full-season pickup, extending the first season to 22 episodes. The season was extended again on November 4, 2009, when CBS announced its order for an additional two episodes.
The second season began airing on September 21, 2010.