I think it's a Haffner/Stiles team up               I've always thought RJ has a strong connection to Stiles and Visulize                       Stiles seems to be the only one on the show who knows who he is                               and after the weak McAllister reveal I'm convinced Stiles and Haffner are still alive and it's more likely Haffner is Red John and Stiles is the one who discovered him at the Red Barn and is his mentor      Haffner\Red John runs BA for Visulize                    how awesome would it be if Malcolm McDowell narrates the true Red John story through flashback and after that Haffner turns around and slashes Stile's throat and paints the RJ smiley face     then gets away