Another key member of the Las Vegas investigative team is stepping out from behind the yellow tape. EW has confirmed that Laurence Fishburne, who joined the show more than two years ago in an attempt to fill the void left by William Petersen, will not return to CSI this fall. Fishburne’s contract, like many of his co-stars, expired after the season 11 finale in May. In an interview with EW, the film actor indicated that he wanted to return for another year as Dr. Raymond Langston. ”I’m having a great time,” he says, while acknowledging that it was a challenge replacing Petersen’s Grissom.