All I can say is that so far....Heller has managed to explain the Tiger, Tiger thing in a way that none of us saw coming....he also explained the Kirkland situation in a way that none of us saw coming....He also revealed that Red John discovered Jane's "happy memory" in a way that none of us saw coming....I think we should just give up on trying to guess who Red John is....so far, it's clear that we're wrong about anything else we've thought so far and Heller continues to shock us with his answers and revelations. A lot of things seem obvious, but nothing on this show is ever as it seems. Red John could be anybody, on the list or not. The only thing we can do is sit back, enjoy the ride, and let Heller surprise us all, as I'm certain he will.