Seems everyone has forgotten that Jayne murders someone without remorse, then covers it up with Lisbon's knowledge. Then he covers up his mistake and walks. That was the turning point for me. I thought, this man is psychopathic. Its a small step to him being RJ from there.
He commits felonies on a whim every episode, and CBI enables him.
He drops little hints like that he hasn't slept for days, most likely because of his psychotic breaks.
Just recently, he brought that ballplayer down to his guns, tricks him into coming up to confess, but things go wrong and the suspect and a cop are killed. You either believe Jayne is a negligent buffon who got two people killed by mistake, and got in no trouble btw, or he set thatall up. Why, so police would be unresponsive to assistance calls from the CBI and Lisbon would be alone when she went in the house.
Patrick has a split personality, is the true leader of the cult (notice that the cult membership list is still being witheld from the CBI). The seven are his closest minions, and have committed crimes on RJ's behalf. Patrick is not RJ like Heeled says, because they are two distinct personalities.
I caanot wait to see Lisbon's face when she realizes she has been aiding RJ this whole time. I'm sure her chasing Patrick is how the story goes on. Either that, or she runs away with him :-)