Sorry, this is just for fun because the TV Guide article has everyone calling for one person. I've read it so I know the theory

Since Van Pelt and Rigsby are leaving the show I just thought I'd throw out someone like Rigsby. He has been on since Day 1. The actor is actually Welsh in real life and has a very strong accent. It's strange to see. So he could change his voice to be creepy or different. The spoilers say..........










That the show will end with the killing of Red John and then fast forward 2 years. So maybe Rigsby was Red John. He dies. Grace loses 2 bad husbands/boyfriends and quits to disappear and there we go.

By the way here is an interview with him. Funny to hear him

http://www.youtube.com/watch?v=dwVPw44lta8