I accuse Rigsby. He is a womanizer that has played Patrick from the beginning, pretending to be the simpleton. What does Jane do upon their first meeting? Observe that he is into VanPelt and "manipulates" him into the relationship. This is all an act, as if jane has control over him, allowing him to get close and keep up on all of Jane's activities. He has a dark side with ties to criminal pasts and a tendency for redheads.
He controls and has used Bob Kirkland to give him the list from Patrick's cork board. The real twist here is that Jane was on to him and specifically left him off of the board, knowing full well that the board would be compromised. Having confirmation that this has happened, Jane is playing a part, "keeping secrets" from the team and forcing an "animosity" between him and Lisbon. The illusion of kinks in the armor. He is playing RJ/WR.