Interesting show, but as the twists and riddles unwind, I came to my own conclusion that Red John is the ulter ego of Patrick Jane, or vice versa, as in Primal Evil. It started when he was a child until he killed his own family. Both sharing many traits, even with the last episode having Jane in sight when the murder took place has not altered my thought, as the power of suggestion causes others to act on his behalf as many have done in this show. All have died who have seen this other side of Jane, except the little girl at the grave yard. Other than that, my only other perception is one that has not been shown, such as a brother not yet revealed. The trick of this show seems to be not in what you see, but it in what you hear and can piece together.