Of all the remaining suspects, you can make a case for any of them. Some are more tenuous than others, but this is TV, so they can always squeeze a round peg in a square hole if they (Heller) want to. Eg: Stiles is too old, but you can massage the facts a little and make him work. Bertrum is bald and seemingly not physically equipped to be RJ, but again, it is possible. However, of all the facts we now know, Haffner fits all of them. He is by far the most likely. Reasons:

1. He is similar to Jane. He even looks a little like him. He is charming and physically stong and agile. This is VERY important and not to be overlooked. RJ is a guy who can charm women and men alike into being accomplices that view him as a deity figure. They would die for him before betraying him. RJ would likely be good looking and incredibly charismatic. All the time. Think of Lorelei and the kind of person to completely have her under his spell (not to mention all the others). She says RJ and Jane are very alike, and surprised they didn't become friends after shaking hands. The most alike Jane amongst the suspects is Haffner. By a mile.

2. Physical attributes. Height. Age. Hair. And also his strength and agility. RJ is a guy who doesnt just kill with a gun, he slices up people. He hides in bathrooms and sneaks out behind Lisbon to accost her. He is strong enough to slice up Partridge, bind him, put him in a closet. All the men could do this, but it is just so much more likely that RJ is physically very strong and agile. Haffner looks to be the best candidate again. Perfect height, age, hair for the descriptions. Fit, strong, agile, very capable of the physicality of his murders and the murder scenes he constructs. Much less so are Bertrum, Reede, Stiles, Mcalister.

3. Whistle. As soon as Haffner whistled that tune after the creepy hospital visit I thought it would be very meaningful. (Anybody know the tune? is it a clue?) And then right on cue, we learn from the shrink who overheard RJ whistling in the waiting room that RJ is an excellent whistler. Note: he whistles in a waiting room at the shrink's. So he whistles at odd moments. We hear Mccalister whistle in the car, but this is normal behavior. Whistling in a waiting room, a little less usual - just like whistling as he leaves the hospital room. I mean, it was just so odd that he started whistling. Who does that as they leave a hospital room after an awkward conversation. Perhaps the 'phobia' that the psychiatrist detected was a phobia of medical rooms? Silly, i suppose, but something to think about. Whistling at the shrink's office and also at the hospital.

4. He either genuinely likes Lisbon or he is trying to woo her as part of his plan to mess with Jane. Either way, RJ did not kill Lisbon and Haffner fits this criteria too.

5. Power, connections, technology: Haffner's job and status gives him all the ability to monitor and control the situations as he needs to. Perhaps not as much as Bertrum, although perhaps in some ways he has more power, given his elevated federal status.

6. Visualize connection.

We still need to discover the Blake connection with Tyger Tyger. We still need to learn more clues, and likely twists and turns will occur. But as of right this moment, who is more likely than Haffner? He just fits the physical facts so perfectly.

Using all clues given throughout the show so far, i've in the past narrowed the suspect list down to 2 names - Robert Kirkland and Ray Haffner. I shall try and deduce RJ's identity from these 2, using the new clues given today. Patrick obviously has faith in Dr. Miller's ability, so i'll assume what she said prior to being killed is correct.

1. RJ is said to have a phobia of some sort - neither has an obvious dislike of anything, so nobody stands out here

2. RJ is said to be a narcissist - Narcissism is a trait seen in those who have too much ego, and is apparent when someone's ego has been damaged. We saw how badly Haffner took losing to Jane in "Little Red Book", which suggests a large ego, and damaged pride. Kirkland hasn't demonstrated ego problems, he's very calm and measured, so he's not so much a narcissist, much more likely a sociopath. 

3. RJ is middle aged - both of these men are in their 40's, Haffner is (by the show's logic) 46, given he was 21 in 1988, and now it's 2013. Kevin Corrigan (who plays Kirkland) is 44, so the character would be roughly the same age.

4. RJ has many friends around him - Haffner is a member of Visualize, who all share the same goals, and are largely friends to each other, it would give him many people to rely on. He also has FBI and CBI links, giving him a large social circle. Kirkland works for DHS (Homeland Security), so he would also have many colleagues to call on and help him out, but not as many as Haffner, given his more limited role. 

5. He is an excellent whistler - rather trivial, i'd assume both men can whistle

6. He doesn't deal well with adversity and conflict. This is where Haffner jumps out at me. He did not handle PJ well at all, he was constantly on edge, he looked seriously uncomfortable, and got shown up badly. Kirkland again, looks far calmer around PJ, even starting conversation with him, and he has also shown far greater cool under pressure, he killed Jason Lennon with ease. 

7. He's an excellent liar -  Kirkland scores points here, he's far smoother under pressure than Haffner is, Haffner couldn't even lie convincingly to Lisbon, unless he's tricking everyone.

From these new clues, i give the score 3-1 to Haffner, he's clearly a narcissist, has a large social circle and isn't good under pressure, but the lying part is making me question my decision, though my gut has said for ages that it's Haffner, ever since "The Red Barn." 

My guess is that Kirkland (like Jane), is on a personal quest against RJ and his organisation, though i can't think of a reason, maybe something to do with national security. If he was RJ, he wouldn't need to break in and steal PJ's Red John casework.

So by process of elimination, and i'm not 100% sold on this myself, it has to be Ray Haffner. There is too much evidence against him, be it the old evidence, such as the physical description, or the new evidence, as i've explained. 

My one hope is that Reed Diamond has the acting chops to pull this off, otherwise TV's greatest modern mystery is going to be a real waste.

I think it is definitely Ray Haffner, as he fits the following:

- As per Sophie's description, he is middle-aged, with short hair and a pleasant appearance.
- Also, he is seen whistling as he leaves the hospital room. Even though MacAllister is shown whistling in the end, that's meant to make you forget about the beginning.
- Rosalind said once that Red John's hands were callused. Well, that's exactly what you get when you lift weights!
- His membership in Visualize fits. Brett Stiles obviously knows who RJ is, but wouldn't give up one of his own. I think that's why he helps Jane a bit, because he knows it's wrong, but won't ever give him RJ on a silver platter. The theories about him being Stiles' son intrigue me, too, but I have no real evidence.
- Haffner's affection for Lisbon is one of the reasons why RJ couldn't hurt her in 06x02.
- I also thought the female doctor dropping in to the wrong room, was a bit strange. Like she scoped out if Jane was still in there. Then we see her behind Jane in the hallway when Jane is on the phone. Then Haffner came in to see Lisbon

After 06x02 I'm more convinced than ever.

Just seen Black-Winged Redbird, we know from Dr Miller's notes that RJ is middle aged, which rules out Bret Stiles and Sheriff Tom McAllister, both are too old. 

Reede Smith and Bob Kirkland are too young, which leaves Ray Haffner and Gale Bertram.

If we then factor in the physical description of RJ (medium build, short hair), that leaves Ray Haffner.

We know Haffner is 46, thus middle aged, we know he was 21 when he was at the Elliston farm, we know his visualize links, and we know he likes Lisbon enough not to kill her, RJ spared Lisbon for some reason.

One thing I've figured out is that Red John always calls Jane "Patrick", by his first name. Also when Red John called Jane with Lisbons phone he said Teresa Can't come to the phone. He called Lisbon by his first name. Could be a clue

Also I believe its Ray Haffner because of the connection with Lisbon. If lisbon isnt dead in episode 2 then I believe its him.

I think its ray haffner. and for all german fans: take a look an http://www.facebook.com/weristredjohn

i found that page yesterday and i really love it :)

He calls always Agent Lisbon in the thirteen episode of season 5 ``Teresa``. In the first episode of the sixth season, Red John said to Patrick Teresa can't come to the phone. I never saw in the serie another person than Haffner who call the first name of Agent Lisbon. He's certainly the serial killer because he is the only person who call the first name of Agent Lisbon.