Hi Guys, 

Honestly, I have still no idear who Red John is. Although I have some theories. I believe that it isn't Jane or any of his team, (meaning Lisbon, Grace, Rigsby or Cho)

What do I believe?
I believe that Theressa has met Red John at here pokergames with Bethram. I also believe that Bethram knows Red John (not being aware of it) and that they met in that Pokerclub of theirs. Same place where Theresa met Red John.