CSI: NY (Crime Scene Investigation: New York) is an American police procedural television series that premiered on September 22, 2004, on CBS. 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. The series is 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. The show airs on Fridays at 9pm/8c on CBS; in the UK it airs on Channel 5 on Saturdays at 10 p.m. with repeats usually shown on 5USA.
Originally in 2004, CSI: NY was produced in partnership with the Canadian media company Alliance Atlantis. The company dissolved after season three in 2007, and all production since then is done under the purview of CBS Paramount Television.