Its Haffner. No doubt in my mind. He is very shady. His timelines from back in the day don't check out. He was a troubled 17 year old yet he has some fancy looking football trophy in his office. When did he get this? When he was a troubled 17 year old going down the wrong path? When he was in college? That would be right around the time he was out on the farm with those hippies. I am guessing all his credentials are fake. How about when he asked Cho who was smarter?? Haffner or Jane? Red John has to feel that he is smarter than Jane and it probably is driving him nuts that others think Jane may be smarter. This is probably why he vowed to start killing again often, He wants to prove he can outwit Jane. Look at Haffners eyes. He has the look of a sneaky nutcase. As a matter of fact, F Haffner. I hope Jane kills him! I HATE HAFFNER!