I have read so many theories and if they really want to please the loyal fans then wouldn't it be badass if red john was Christopher Walken and he would walk in and say to PJ " your talking to me all wrong do it again and I'll cut your throat with a knife" On a serious note the day before the red john episode I will post a link that is already out there that shows Partridge is Red John but for the sake of the show and the suprise I have kept it a secret for two weeks now.