is Oscar Cordero (the SAC detective who talked to rigsby in the last episode about how kirkland got shot  http://images1.wikia.nocookie.net/__cb20131030193304/thementalist/images/e/ed/Oscar_Cordero.png 
non other than red sweater man.. http://thementalist.wikia.com/wiki/The_Red_Sweater_Man?file=Vlcsnap-2012-05-06-11h45m40s44.png 
those who have been follow this show for a long time will for sure know who im talking about.
their facial structure look exactly the same but he looks like hes lost a little bit more of his hair line and put on a few pounds.

if you look up imdb list of casting for the "red john" episode everyone is freaking out about jack plotnick (Partridge) being on the show but so is Kirkland and sophie miller... and so is an actor playing young red john, so im 100% positive they will be showing ......FLASHBACKS. would i be disappointed if it ended up being Brett partridge? NO! that would be awesome but i think its some inconspicuous cop like i always have thought and i think i might have found him....

Here is my latest theory concerning Red John... Honestly I don't think Jane has a clue who he is. I think Red John from the beginning, was involved with the Tyger Tyger Organization, but then wanted out of it for some undisclosed reasons. Because Red John wanted out, the organization wouldn't let him or something along the lines that sort of drove Red John over the edge, or drove him towards revenge. From the beginning, Red John has tried to take down the organization, but couldn't. His first assignment in the Tyger Tyger organization was to kill Jane's wife and kid, however, since Tyger Tyger forced Red John to kill Jane's family, Red John could not live with the guilt. So Red John tried to take down the organization by carefully planning murders, however he failed to take down the organization. So, in the spirit of Redemption, Red John realizes that Jane has the only ability to take down the organization...From the beginning Red John has been leaving bread Crumbs for Jane to follow so that Jane becomes closer and closer to realizing the Tyger Tyger Organization. The way he did it, was the first time they met face to face, Red John told Jane the Tyger Tyger poem, making Jane think that the poem was connected to Red John, he did this so that Jane would pursue him or continually follow the "bread crumb trail" because of the association between Red John and Tyger Tyger. Additionally, since Red John was familiar with some of the main leaders within the Tyger organization, he knew their characteristics. Planning to "kill" Jane's Memory, Red John did that so Jane would figure out that he did that by visiting Jane's psychiatrist. Before-hand, Red John visited the psychiatrist to plant the characteristics of the organizations leaders as a profile for himself, because once again, he knew that Jane would try to pursue anything that was associated with Red John, and by doing so, Jane was closely exposed to the Tyger Tyger organization or "the bigger problem". This would also explain how Red John knew Jane's suspect list, it's because Red John knew that the clues he left Jane would lead him to choosing the leaders of the Tyger Tyger Organization. This entire time, Red John has been using Jane to take down the Tyger Tyger Organization to take Revenge... Ironic, because Jane wants to take Revenge, on Red John, who is using Jane as a tool, to take Revenge on the Organization that caused Jane to want to take Revenge.

The very theme of this show is revenge for the
Tortured soul, but if Jane is caught up so much on his own revenge, he doesn't realize that Red John is also a Tortured Soul, trying to seek revenge.

What if the only way to truly find out who Red John is, is to sympathize with his Tortured Soul...

It is a theory anyway.

http://www.imdb.com/title/tt3196216/fullcredits?ref_=tt_cl_sm#cast 

Ummm, in the episode 'red john' on imdb (link above) Red John is one of the characters? Played by Bradley Whitford

FIRST AND FOREMOST, I WOULD LIKE TO SAY THAT THE IMDB LIST IS AS GOOD AS MY SHIT AFTER EATING MC SPICY. 

Secondly, its my theory. I am positively sure 99% that NONE of them in patrick house in the last episode is NOT and NEVER are RED JOHN. Not haffner, stiles, betram , mcallister, smith. Red John is a few steps AHEAD. RED JOHN is not cocky and won't make a blunt move of facing patrick in a room whereby GUNS GOT CONFISCATED AND SUDDEN BLOW UP  HAPPEN . Red John won't even let patrick command him to expose their body just to check for tattoos. He won't even need his accomplices in that room when facing patrick.  Come on, do you guys even understand what's red john personality like? Hes artistic , a showman, who proudly shows his art of killing. The sad face, symbol for red john must always be seen, which shows misery and sadness, afterwards we know there's death. He's simply a personification of death like how Heller said. He obviously knows the way of killing and how to cover up his tracks. THAT IS RED JOHN. Red john is not a bunch of dummies in patrick's house. The last few suspects are of course connected to red john somehow but we don't know how. Stiles may be red john's father. Betram, smith and macallister may be working with red john. Haffner best fit with the description of red john but his personility is nowhere near red john's. I mean who knows but definitively if you are smart and good in psychology of reading human behaviors and personality, you will know none of them is not red john. Which makes us left with KIRKLAND, PATRIDGE AND THE FUCK UP IMDB LIST- WALTER MASHBURN. I put my bet mostly on Patridge. He is definitively good in most aspects of personality and description plus he enjoys solving death scenes. Anyway i don't mind the other 2 and i would also bet on them. I just don't care who is red john. WHAT I CARE IS WHY AND HOW IS HE RED JOHN?  THATS THE QUESTION MAN. thanks for reading mentalist lovers :)

RED JOHN FTW

Is it possible that Partridge somehow found out about Tyger Tyger (say, he might've noticed that evidence was being messed with to cover something up), and that's what got him killed?

Jane father is red jonh.Becouse red jonh mans said ''jane very alooklike red jonh''.It's my thery .

The only thing that is 100% certain about the IMDb cast-list for the Red John episode is that the News Anchor and Media Liaison characters are sexy as fuck