FIRST OF ALL Red John is not 1 person BUT 3!!!! (dont read v4 watching S06EP06)
the girl who died in the S06EP05 said he has 3 dots on the left shoulder.
My theory is the three dots resemble the three people.
Those are:
1,Reede Smith not just he has 3 dots on the shoulder but afraid of heights and also the Tiger Tiger Motto thing that he said to the truck driver that was transporting bob kirkland when he shot him
2.Thomas McAllister not a lot of proof since he is NOT afraid of heights but he has the 3 dots tatoo that's all i know
3.Gale Bertram other than the 3 dots the time Patrick told him about the meeting he called someone and said he had "an interresting conversation with patrick jane"
and there's a high chance Patrick shot at least 1 of them cuz we heard gunshots B4 Lisbon arrives and the explosion
ofcourse jane could've told them to move then blew the place up but.
so that's my theory tell me what you think about it and if you agree or not
