SPOILER SPOILER
Red John is Gale Bertram check 6x07 Promo only 3 suspect left and the actor who play Gale Bertram stop casting after 6x08 will mostly get killed.you can google it !!!
Red John is Gale Bertram and will mostly die in 6x08
SPOILER SPOILER
How do you find this theory?
plausible
unlikely