Could it be Patrick himself? Maybe he has a duel personality.  The famous poem tyger, tyger can refer to the fact that there is a real symmetry with RJ, being another PJ' personality. Also in 5X02 Charlotte who can represent PJ's subconscious said:  "Does anyone know who you are?"

Also the fact that RK knows so much about PJ .it seems like RJ is trying to say something to PJ.
In the episode 5x22 RJ said: "until you catch me, or I catch you". But why RJ should catch PJ? He already showed that he can reach PJ and all the people he loves. 

Moreover, PJ is a mentalist, with the ability of hypnotize people. He could have hypnotized people to kill others, or to sacrifice like Timothy Carter did. 

Maybe RJ has a tattoo on his arm, but do we have ever seen PJ without his suit?

..but in the end..I don't know..
 I can't wait to find out who RJ is! 
(sorry for my bad english, I'm italian)

I've been reading thoeries in this forum for a long time and have never seen this one but first a couple of comments. I used to agreed most when reading these with the idea the Grace was RedJohn however that has obviously turned false but it was very interesting and I feel those with that origianlly theory were close. Number two... its a little unfortunate that the writers have the luxury of twisting and turning this until the last second and you know they are research our thoughts to see what would give the big surprise, which leads me to my personally theory..
Patrick Jane is Red John...  I think it would be fairly plausible for them to show that Jane is sufferrring form split personality disorder and doesn't even know it therefore he has been chasing himself all the while.. Red John is his alter ego and just as smart (cause they are they same person) but holds the upper hand cause Red John knows he is Jane but Jane does not hence Red John being a step ahead...
Like we all know, Jane is always three steps ahead of everyone and the mind is very powerful to show and hide things from the user...(like in the film Memento, where the dude looks for jis wife's killer and she never was actually dead)
This other theory is more far fetched however, but Brett Stiles i feel i connected somehow... I always felt he had the closest mind power to Jane and the always shared a secret perhaps the has never been revealed or that maybe only one knows about..(perhpas they grew up together or crossed paths in the carnie biz) so I do like the theories linking Stiles to this somehow i just don't know how he fits yet..
The whole Tiger Tiger thing I think is a ruse to add just another confusing element to this to be honest as the whole ball of wax is gaining speed barrelling down the hill to the finish...in short...

Patrick Jane will be revealed as Red John

Its Patrick Jane. 
Just read the whole paragraph before disagreeing with me-


The whole series is taking place inside Patrick Jane’s head. He’s still in the correctional facility and this is his way of justifying the death of his family (which he committed in a fit of rage). His sub-conscience created the character of Red John, who he could blame. All the episodes are false or imagined memories associated with his pursuit of this fictional character. In the end we will find out that PJ is the one with the tattoo on his shoulder. A scene will come at the end of the season when all the suspects are dead and Patrick will look at himself in the mirror at this big revelation will dawn on him.


Sorry, for ruining your series guys. I couldn’t help it. ;-)

Three dots, thats my leverage, i got him. 
Like red john needs to use an sloppy private investigator to bug the cbi office. Please, who thinks jane is losing his touch ?

Jane pronounces Lisbon's first name 'Tereza' at 1:29 -1:30 of this link, EXACTLY like  RJ pronounced it when he called Jane at the end of S6E1. Freaky!!

Compare them! Heller mentioned a huge clue was in the final scenes of S6E1!

http://www.youtube.com/watch?v=wZlbenF4_PQ

Pay close attention how RJ says her name. It is very distinct.


Now listen to Red John when he calls Jane. Link Below.

http://www.youtube.com/watch?v=-mYSnFVipYA

Keeping this short and sweet. Im thinking Jane and a split personality. I don't think it is anyone on the list as they are to obvious.

Even his name has the word trick in it.