We all got outsmarted by Bruno Heller again. If your ego isn't too bruised, read on. We never saw the real Red John ending. Read this theory and you'll understand if your intellect is up to par. It might help to rewatch episode 8 (agony, I know!).
http://www.whoisredjohn.com/See-a-theory-Red-John/16568
Our consolation prize; 6 Years worth of Red John clues are saved.