This is just a fun fact [no theory here] 

In real life, Lisbon is played by actress Robin Tunney, of course.

Her full name is Robin Jessica Tunney, so she'd be "RJ" Tunney

Cute, very cute Heller!  
His penchant for coincidences that mean nothing but a tease never cease, that's for sure LOL

Red John could be lisbon. i found a clue in season 5 episode 24 (the crimson hat) at 22:10

when jane says to lisbon "i told you i can fool him" she says (you fooled me alright well done)  

i think she slipped.

Fan Fiction.
Abbott is done with jane. The deal is off the table and Jane will be tried for the murder of red john ep20

Jane encountered that Lorelie was in the fbi. That is why the fbi wanted her so bad and went to great lengths to attain her. And how they were aloud to steal her and show a replacement inmate in her place. That was never explained how they pulled that off.
Alexa Shultz is working for red john in the fbi.
Jane causes a shitstorm and abbot gets him arrested.
.....Lorelie was confident rj would get her out of jail. That means rj is fbi or Brett styles. Styles eventually did get her out of prison. Not many people have that kinda pull.
In watching old episodes its weird watching Bertram help Jane out with Rj stuff. It seems like Bertram really wanted Rj on a platter. A fish platter. Fischer platter haha
So we have Red John the ego maniac who paints the face and craves attention and we have a leader of a secret organization who doesn't want anybody to know who he is. Devoid of all ego. Plus it would be the first serial killer ever to create a law enforcement underground mafia as well as having visualize like brainwashed followers. How does a serial killer and lowly sheriff start owning governors and judges and law enforcement as a whole?
-red john alive or not there is a major hole in this saga. Rjs footprints seem to lead two completely opposite ways.
The male dominated BA vs the female brainwashed Rj followers.
Classic ying yang ish

The episode white lines htell us that a woman can lead a huge empire

Teresa Farragut?

This is my theory I've seen the show from the beginning all the episodes and have seen many tracks that have been introduced throughout the season and I want to share with you and see if you are agree let's start. 

1.The painful history of teresa lisbon, his dead mother and alcoholic father beat them to nearly kill them, this is my first point in many cases of murders  it has been found that they received physical or sexual abuse by their parents.

2.At the end of the first season Patrick creates a plan to trick Red john friend ,the cop who kidnapped a girl the plan was to fake a fight with lisbon and leave patrick alone with the police, patrick would become a bait to red john teresa would only have to wait until he shows but she interrupted patrick plan and in that moment patrick bother with teresa because she ruined the whole plan and she says that red john was gone.

3.In the end of season 2 patrick calls teresa before entering to the empty building just her knew his location and red john appears on the building a few hours later.

4.In the end of season 3 It is ridiculous how in the hell Craig O'Laughlin member of fbi a trained hitman fail the shot so close to lisbon so so close i mean c´mon man really ?

5.In the end of season 4 Patrick had completely deceived red john even sent lorelai as a gift to him ,and invite Patrick to join him the whole plan was perfect the false depression and problems patrick made red john appears but the whole plan but the whole plan falls apart when he tells teresa she seems very upset on the church after that red john ask for the head of teresa of course because he knew that patrick never do such thing to her to the REAL RED JOHN and of course red john never appears .

6.On the season 5 the whole chapter red and itchy is about the mother of JJ Laroche and how she was raped and he committed suicide how terrible it must've been to make that to herself maybe the style of red john attacks the alleged perpetrator is in prison serving a sentence for nine years but the only thing that involving him in the crime was a little drops of blood on his clothes as if someone had planted that evidence ,when Teresa asks for the residence address to van pelt it shows on her face as if she remembering something van pelt tells lisbon that the rapist lives with his mother . how a rapist who raped a mother of someone would dare to see his mother's eyes makes no sense because he wasnt the rapist was red john aka TERESA LISBON .maybe she didn't kill her because scott the man whitout tongue the same tongue on the box of JJ Laroche saw everything i don't know,my point here is when he saw teresa he is very scared and he tries to say she is red john babbling and this is the moment when the show reveals who is RED JOHN the real RED JOHN she turns to see scott and you can see the evil in her eyes and in that moment the theme song of red john appears then the camera looks to the very scared face of Scott and returns to the face of Teresa and and she has a wicked smile on his face like a smile of a crazy person and the chapter ends.

7.Then on the season finale she appears with a injured arm and the same time red john kills another women coincidence i dont think so i don't believe that she kills that woman and she wanted to keep the baby because she has a very lonely life and could not adopt a baby because no association would allow that because her job and because she is single , on the same chapter you can see how she looks the body of the women like if she admired her work and when she exits the room she looks again the smiley face and we can hear a sound like a knife or a sword unsheathed,
Another scene on the same chapter Patrick tells Lisbon that the list is now of seven names but he dont wanna tell her the names because she is bad lying and patrick mocks her and she looks angry and she tell him she can keep secrets ant that right there is another moment Patrick sees teresa and on his face he looks so angry and disappointed like he knew who she was.
The real reason why red john is always ahead of patrick is because he tells everything  to Teresa aka Red John . Answer to the Shawn Barlow question.
On the road Teresa tells patrick "I have secrets froms you secrets you cannot imagine"  right now you imagine what those secrets are dont you ? 
The last scene of the episode when Patrick gives Teresa   the seven names he look at her just to see her reactions to some man of the list but look her face when she looks Bob Kirkland she looks so angry because Bob Kirkland is hunting her for killing his brother . and Patrick never stop to look at her when lorelai says in retunr he wont make me suffer so much you can see how patrick looks right on teresa eyes and he is very angry 
note:when patrick knew Mccallister he never took his hand but on the chapter when patrick had his first case with the CBI  Patrick  shakes hands with Teresa 

8.Season 6 has some important clues such as the smiley face on the face of Teresa as she was saying here I am the face behinf the smiley faces of blood .
I think the name of Carmen lee is very important maybe is the real name of Teresa Lisbon .
The bomb how she knew that Patrick would be in danger with the 7 suspects at least she knew about the bomb .
And the happy memory of teresa the cake on the rain and her mother feeding pigeons , How Patrick defeat Mccallistr with a pigeon a hidden message 
THIS IS NOT OVER YET

Red john`s name may be dead.not him.
If this is a game red john could be seen as a different character.
If red john is alive.i do not think jane would kill him again.maybe red john will commit suicide or lisbon will kill.
Maybe jane has created his own imaginary world.