I know Teresa is Red John. Why? I could give you all pointers in the serie that would make you 100% sure. But what is the fun in that. READ this and look for them yourself. And trust me after reading this you will look ;)

How come red john never knows when Jane is on to her until shes "Filled-in on his plan? And then we all know what happends after. Jane fails just in the last moment when she knows whats going to happen. And like the murderous pshyco as she is, with vain imprinted in her. She comes to Patric in the aftermath to be his concerned friend. But really shes there to se his pain of coming soo close but not Suceeding in the task. That gives her proof of his weakness of trust and his lack of seeing things clearly.. Thats What i would do :) And Hey!

TERESA LISBON mirror-it and make out TESA IS RED JON
(Teresa is often spelled with H between T and E that Would be TESA IS RED JOHN

Happy hunting people... I think i feel like her right now. Knowing everything and using you like puppets.

Brett Partridge -the character and the name are suspicious.
If he’s not RJ, than he’s an associate. His character has too many lines and
too much overt personality for someone not integral. That jumped out at me right
away. In addition to the previously mentioned reasons by the other posters
concerning BP, I like the William Blake connection. A Brace of Partrdge is a
painting by WB of two partridges lying on the ground together. Maybe dead.
Unclear. Also, the Tyger Tyger poem by WB in 0223, asks the question of who
makes evil (the tyger) and how could the creator of it allow it to grow? A line
in the poem, “Did he who made the Lamb make thee?” reflects RJ’s fascination
with good, with Patrick. But these obsessions are always tied to emotion. What
is up with the real RJ? What is this deep pain? It’s not random killing. There is
symbolism in everything he does (I bet). In 0123 Emma is killed and the sister
Maya spared. Emma is the dark and moody one. Why spare one? We are to think it
was payment to Hardy, but we all know that RJ could’ve done it himself and killed both girls.  We know that. That always struck me as odd.
Why would he need this guy to get her for him. RJ could’ve killed Hardy after
Hardy stole the girs for that matter. So no, I think he kept one alive on
purpose. His obsession with siblings’ love. Make the live one suffer loss. Like
he did. ?? In 0508, we learn RJ killed Laurali's beloved sister. He spared Laurali. So RJ and PJ are brothers? My only
problem with the Partridge as RJ theory is that in 0508 Laurali says Patrick
and RJ should’ve become best of friends after they first shook hands. I don’t recall BP and PJ ever shaking hands. Partidge is a minion? Maybe RJ is Stiles
after all. William Blake has 3 paintings, The Dance of Albion, Newton, and Angel of Revelation. The character in the paintings is unmistakably our hero. You gotta see it. Uncanny.

It's Lison's brother the bounty hunter. 


PJ shook hands with him and instantly knew he was a cocaine user, which is why Lorelei mentions it because it was the only memorable handshake of the entire series.  The Tyger poem relates to Lisbon's struggles in dealing with finding out her brother has been usurping power and police information to become a serial killer so she's connected with Jane in that way because they are close and it was her own family that killed his.  He's also handsome and smooth.  Robert Kirkland might suspect it even that's why he's playing games with Lisbon to get close just in case he's right, and he probably wants to make sure she isn't helping him.  Why else would he want to buy her a cup of coffee?  Like RJ and his cohorts really are worried about stupid Lisbon, and I'm sure it's not about just trying to get a date, he is genuinely concerned to explore the angle that he has just discovered. 

I'm not really sure that I really believe that Jane is Red John, but after watching the last episode 'Red Sails in the Sunset', some of the theories really got me thinking about how Jane could potentially be Red John without even knowing it. Whenever Lorelei is walking and Jane pulls over and she is surprised to see that it is Jane and not Red John.. I think that she was not surprised to see Jane, but moreso surprised that he was in his Patrick Jane persona as opposed to RJ. If Jane is actually RJ, it would explain how Lorelei was so comfortable with him when she meets him last season in Vegas, she doesn't quite seem the type to sleep around just because Red John tells her to. I think that Lorelei is in love with RJ/Patrick... that's why she is at times so conflicted when taking to Patrick.. and she refuses to believe him when he tries to tell her that it was Red John that raped/killed her sister because then that would be mean it was Patrick... she also does not seem overly worried about Red John finding her upon her escape from prison, and also passes up on numerous opportunities to take the car and leave Patrick behind. I know this is kind of a mess because all these random thoughts are popping into my head but it is somewhat making more sense to me as I go along. Lorelei is also genuinely disappointed when she finds out that Patrick had somewhat been planning her(why she attacks him) because she thought that maybe he seriously intended for the two of them to actually take off and be together. This also would explain why she will never tell him who Red John is, because she could never bring herself to tell him the truth... but also why she tells him they are basically the same person when she is frustrated with him. I think the episode indirectly focused on the fact that Lorelei has to interact with Patrick and Red John, being in love with both sides which is why she will virtually do anything that RJ or Patrick tells her to do.

It must be Laroche.  Laroche demands respect.  When disrespected he reacts. (i.e.  when Jane disrespected RJ, and thus his family murdered).  There's some tie to the figurines that Laroche has in his home too. We must find out what was in the plastic container in Laroche's safe!  Even though we may find out who RJ is this season, it doesn't mean RF will be captured... the story goes on :)