CSI: NY (Crime Scene Investigation: New York) is an American police procedural television series, which premiered on September 22, 2004 on CBS. The series was the second spin-off, indirectly, from the popular show CSI: Crime Scene Investigation, and directly from CSI: Miami, during an episode of which several of the CSI: NY characters made their first appearance. The show currently airs Wednesdays at 10PM ET/PT on CBS.