Okay after reading a few other theories I believe Kirkland and Stiles is RJ and POSSIBLY Bertram. It seems far fetched but I just think it might.
I am positive that the words written in blood when Jared Renfrew was murdered is "He is many" written by Renfrew.
Most refer to Patrick Jane as Jane. Red John, Kirkland and Bret Stiles are the only alive ones remaining that call him Patrick.
When Patrick Jane first meets Bob Kirkland, Bob claims that he knows Patrick - Patrick doesn't seem to know him though.
Even on Patrick's first day, Kirkland was after him. He got a woman to call Bertram to inform him that Patrick was a mental patient and had the potential to work for RJ or even be RJ.
He hired 2 Homeland Security officers to break into PJ's attic to get a replica of Jane's pin board and other theories/leads. This data could have EASILY allowed Kirkland to shortlist the same suspects that Jane got.
He killed RJ's friend in hospital with the poisonous injection but DID NOT ASK HIM WHO RED JOHN WAS (which seems like an extremely obvious question to ask unless you know who is).
Kirkland said if he were in this situation he would want a "friend" to do this for him - accomplices are often referred to as "friends" of RJ
Visualize seem to be at the root of everything - between the red barn smiley face, Lorilei saying that she has reached her full "reality" after the death of her sister (that nothing can hurt her now), and the extreme hypnotic devotion of the group to Visualize.
All of RJ's followers are completely devoted to him. They would rather kill themselves than be taken alive by CBI or other police forces.
In Season 6 ep. 1 Bertram is just out of character.
He told Jane and Lisbon that there were whispers that Jane "was getting close. At least he thought he was." then got jumpy and kinda flustered. Wouldn't Lisbon and Jane heard people saying stuff around the office? Bertram's smart remark about Jane thinking he was getting close seemed to be a rare mistake of RJ.
Also early in an earlier season Bertram recited a poem written by the same man that wrote "Tyger! Tyger!" that RJ recited to Jane after rescuing him. This was extremely out of character for Bertram. He has never in any prior episode expressed interest in poetry nor literacy in general.
As I said at the beginning: unlikely but possible.
Anyways let me know what you think please!
