In S01E23, jane discovered that Sheriff Hardy (Dumar) was a friend of Red John and his father was an accomplice of Red John , and was in the farm on 90's.
Sheriff Hardy (Dumar) was born on 16 septembre 1978, so now he is 35 years old.
we can estimate his father's age between: 55 and 65 years.
Red john is a friend with the father and the sometime with the son.

  Sheriff Thomas mccalister is 58 years old.
  Robert Kirkland is 44 years old.
  Raymond haffner is 46 years old
  Gale bertram is 51 years old.

 



  

why is bob kirkland the only red john suspect whose name does not appear on the list of guest stars in 06x06.....hmmmm.

My theory is that Bob is killing the people on the fake list, believing one of them to be RJ, and once he gets wind that the list is fake, he kidnaps PJ in order to try and get the real list. Realising his career is pretty much over, he goes all out to get the list, comes close to killing PJ, but at the last minute, the real RJ comes in, kills Bob, saves Patrick, much like Red Sky in the Morning, but this time, he doesn't speak or uses a different voice, something that would throw the viewer off. Either that or pigeons will somehow feature again.

Kirkland it would appear is out to get RJ, but in a far more aggressive fashion than the CBI, which suggests a personal reason, much like Patrick. My theory is that RJ killed a relative of Kirkland, and it's taken him this long to gather information, and unluckily for him, he's probably going to meet his end at the hands of  the real RJ, much like Lorelei Martins did on her revenge quest. 

This is my off the wall theory that I maybe believe like 15% so I'll see if anyone likes any parts of it.  First we all have tried to guess what that meant when the blood on the wall said he is mar or he is man but they were in Mexico and maybe the hooker wrote it and a close Mexican word to that is Hermano meaning brother so what if when Kirkland asked Red Johns friend in the hospital if he recognized him why ask that then kill him maybe Red John is related to Kirkland and he wants to maybe protect him or stop him now this brother theory could work for any of the other suspects so please help me out on this but the Hermano thing could be something just throwing that crazy way out there have fun with it.

After seeing the promo for "Red Listed" i think we can discount Kirkland. Why would RJ kidnap Patrick, surely that would spoil the game? Kirkland is not associated with RJ IMO, i think he's got a personal interest in the RJ case for national security reasons. I half expect Kirkland to be killed at the end of the episode, Heller did say more suspects would fall, so far we've lost Partridge, Kirkland could be next?

Couple things I have seen regarding Kirkland.  When looking at the trailer for S6E4, you see that Jane is bound to the chair using zip ties.  In S6E1, when Partridge falls out of the closet he is also bound with zip ties.  Also, we see reference in the trailer for the upcoming episode in which Kirkland looks to be cutting off a finger of PJ.  In a previous episode, RJ ordered Lorelei to cut-off Jane's fingers.  I also imagine that if we look closely at the table of tools Kirkland selects in the Red Listed episode, one might find the tool RJ was cleaning off in S6E1.

I don't know who RJ is but I want to analyse the suspects.


Brett Partridge

He's as dead as Cho's personality. I believe he was a copycat killer and that it was him in the season 2 finale acting as RJ.

Bret Stiles

Stiles is more slippery than Rigsby's hair gel. I believe he indeed knows who RJ is but fears him and that's why he wouldn't reveal his identity to Patrick. He could also be RJ's father and that's why he would be protective of his son.

Reede Smith

He's rougher than Jane's stubble. He doesn't match the physical description we have been given but he is powerful and ruthless. I think people are glossing over him too easily.

Gale Bertram

Clearly he didn't get past the 'act like a tree class' in drama school. He has the power and influence to be RJ but he seems too gullible and obvious as well as being too tall and old.

Sheriff McAllister

He's had more hats than I've had hot meals. From 6x03 I think he is a viable suspect. He's been there since season 1 and it seems like he has a fear of pigeons and maybe a split personality. He also offered jane his friendship and is a good whistler. However, he is slightly too old which could rule him out.

Bob Kirkland

He's more dangerous than a swiss army knife. I personally think Kirkland is after RJ because RJ betrayed him or did something to him many years ago and now Kirkland is out for revenge. It could also be argued that he is RJ's accomplice/red right hand but I think Kirkland's streaky personality suggests he isn't the type of guy RJ would have as his right hand man.

Ray Haffner

He's lifted more weights than Arnie. Haffner is my number 1 choice. He matches the physical description we've been given and he would have been 21 in 1988. Also, he is the only one of the suspects to call Lisbon 'Teresa' as well as being a good whistler. The only reason I would rule him out is because it seems like he's being forced down our throats.

Thanks for reading my theory.