Hello guys, I'm the guy who got more than 100 plausibles in a CBI Ron theory. But if CBI Ron is not RJ, (mainly cause he is not in the list), let me tell you something that most of the people here seems to be forgetting:
FIRST - in one of the episodes we discover that RJ had a relation with Rosalind Harker, so we can assume that RJ cannot be that hold, had a soft voice, etc.
SECOND - in season 5 we discovered that RJ worked in a farm in the date of 1988.So assuming that we are in 2013 in the show:
2012 - 1988 = 24
So, we know for sure that RJ has 24 years at least.But we also know that the workers in that farm started with an age between 16 years and 23.
So let's say that RJ was really young and started with 16:
24 + 16 = 40.
So, with this, we know that RJ is an age between 40 and 50 TOPS.
Which means, Stiles is out, McAllister is out, Bertram is out, and Reede Smith is out too (doesn't fit Rosalind's description)
So, right now, we can be sure that Stiles, McAllister, Bertram and Smith CAN'T BE RED JOHN. Not even closely.
Which leaves us: Partridge, Ray and Kirkland.
Kirkland's dead, so we have Partridge vs Ray.
Supposing Partridge is dead, that lead us to conclude Ray is Haffner. But he is not,
Partridge faked he is dead, because he knows that Patrick is smart enough to join the pieces I just joined here, and he knew that Patrick would end up with only too suspects: Ray Haffner and Partridge himself. Partridge might also know that Ray have feelings for Teresa, so knowing that he might actually not kill Lisbon so Patrick will think that RJ is really Haffner.
RJ is a Genius and an artist. Don't forget that.
My conclusion: None of the 7 suspects have a tattoo in their left shoulder. Why?
Actually, please see the last episode again, and freeze frame when the girl that was hired to bug the CBI office, opens her door. Watch the shadow of the guy in the door. Watch closely. Now, imagine how the CBI Ron shadow looks like. Yup, that was him working to Partridge. So CBI Ron must have a Tattoo.
And probably Patrick Jane will investigate all the suspects remaing in the list and conclude that nobody there has a tattoo, wich will make him look like a fool, and put RJ one step ahead of Jane again.
But write this down: RJ is Brett Partridge.