CSI: NY: American Police Procedural TV Series on WCBS (CBS)

CSI: NY Season 7 Episode 21 airs on Friday, May 6, 2011 at 9:00pm EDT on WCBS (CBS) TV channel.
CSI: NY (Crime Scene Investigation: New York) is an American police procedural television series that premiered on September 22, 2004, on CBS. The series was the second indirect spin-off from the veteran series CSI: Crime Scene Investigation and directly from CSI: Miami during an episode in which several of the CSI: NY characters made their first appearance. In season seven the show airs on Fridays at 9/8PM ET/PT on CBS or in the UK on Channel Five on Saturdays at 10:00pm. Repeats are usually shown on Five USA.
The show follows the investigations of a team of NYPD forensic scientists and police officers as they unveil the circumstances behind mysterious and unusual deaths as well as other crimes. CSI: NY was produced in partnership with the Canadian media company Alliance Atlantis. The company dissolved after the third season in 2007 and all production is now done under the purview of CBS Paramount Television.
On May 19, 2010, CBS renewed the show for a seventh season of 22 episodes, that premiered on Friday September 24, 2010.
On December 3, 2010, CSI: NY aired its 150th episode.
CSI: NY Season 7 Episode 20: Nothing for Something airs on Friday, April 29, 2011 at 9:00pm EDT on WCBS (CBS).