I think Thomas McAllister was a very plausible Red John. I know not many will agree but yes Red John is described as a showman but he is also careful and clever. Everyone thinks that Jane and McAllister were nothing a like but I disagree. First off we didn't get to see McAllister enough to tell if he was a lot like jane. But from what we did see at least what I saw there were a lot alike. Just look at Wedding In Red (6x3) Watch them both examine the body watch how McAllister points out things Jane missed but he is very careful about doing it as not to raise any red flags. (sorry for the red pun lol). I don't think it's too far fetched that he was RJ. ok that all I got to say now you can all tell me I'm wrong or not a true fan but I really I'm a fan of the show have been from the beginning and I think we would have been disappointed no matter who RJ turned out to be. He became this God like thing that was unstoppable for 6 years no one can live up to that.