Re: Petersen Leaving! Larry Fishburne Joins Cast! *No Spoilers* i really wish william peterson wasnt leaving the show. But the good thing is he'll still be part of the show but behind the cameras. and he is willing to come back if needed. ok he's needed. lawrence fishburn is definately an interesting idea for a role on the show. We'll see how it plays out. I just hope no more original cast members leave. I guess this makes way for hodges and mandy and the rest of the cast to have bigger parts on the show. omg i hope hodges doesnt become a csi.