UPDATE: It's official. "CSI" will end after 15 seasons with a two-hour movie on Sept. 27. Original cast members William Petersen and Marg Helgenberger are set to reprise their roles. CBS announced the news on Wednesday morning during its upfront presentation.
Industry insiders are reporting that the network will finish off the show, which wrapped its fifteenth season in February, with a two-hour long movie. EW reports that original CSI star William Petersen may return for the special, as well. CBS did not return request for comment on the rumors. Spinoff show, "CSI: Cyber," has, however, been renewed for a second season .
Here's a full list of network shows that have been canceled and renewed for the 2015-'16 season.