I truly believe that Red John is Robert Strickland because he has the voice, the handshake, power, an interest in the Red John cases, and appears in most episodes involving Lorelei...But i think that it is becoming too obvious. So this got me thinking are they finally revealing who Red John is and allowing us to see how it unfolds and how Patrick Jane finds out? Or could this be an elaborate distraction? I tried to think of a counter theory of why Strickland looks so guilty and i think that if he is RJ then he is involved because...he has also been a victim of RJ, maybe he killed his brother, mother, wife, child or something. This also gives him an urge for revenge so he wants to keep up on RJ case because he wants to kill him like Jane. Also when he shook Janes hand and said he knew him this is because he knew about all the other RJ victims, also he seems excited to meet Jane because he knows that he is very smart and likes that he wants to get revenge too. That is why he forces his team into everything involving RJ. This is just a counter theory of why it may not be him...idk!