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William Petersen to Reprise Gil Grissom Role on 'CSI' Episode EW.com's Inside TV

 William Petersen, who left CBS' "CSI" in January 2009, will return to the program to reprise the character Gil Grissom for one episode,reports EW.com's Inside TV.

His return will involve Jorja Fox, who plays his wife, Sara, the story notes. It's unclear when the episode will appear, the story says. When Petersen left the program, he and the show's producers promised that he would return occasionally, the article says.