First off I want to say that I don't think Kirkland is RJ but I had to put somebody. Now, In the promo for the next episode (Red-Listed Season 6 Episode 4), there is a man lying dead on the ground that is on Jane's fake list of Red John suspects, take a look: http://tinypic.com/r/f1ej9k/5 and another angle with reede smith in it: http://tinypic.com/r/2v9uiwk/5. Also in the promo Jane is being kidnapped and "tortured" by Kirkland but if you watch closely you can see that the man with the finger Kirkland is going to cut off isn't Jane becuase of the clothes. Take a look this is Jane in the promo being kidnapped : http://tinypic.com/r/okmuet/5 and a look at the man with the finger: http://tinypic.com/r/2ym615d/5 notice that the man is wearing brown pants and jane is wearing his usual grey pants, my guess is that the man on the ground is somebody that was in a previous episode and only appeared once before. I also think that when Kirkland is threatening to kill Jane then Red John comes and saves him. Another huge clue in the promo is the words "watch this episode closely" in huge letters during the promo