LOS ANGELES, Feb. 1 (UPI) -- William Petersen, an original star of the U.S. TV series "CSI: Crime Scene Investigation," will appear in an upcoming episode, Entertainment Weekly said.
The magazine said Monday it has learned exclusively that Petersen, who played forensic entomologist Gil Grissom on the hit crime drama, has already filmed a cameo but it was not clear when the episode will air.