Gale Bertram is Red John! Gale is reference to a crater that looks like a smiley face on Mars. Bertram is a reference to him burning bright like a the tiger in the poem. Jane knows but needs Teresa to arrest him. He has been doing this to take apart the organization. He has been working at CIB because Bertram was there. Bertram didn't kill Teresa because it would have meant that it would have been more heat for him. Everything leads to Bertram. Galle is always calm and never loses temper. That has to be false. PJ knew it when he was going to shot him a few seasons ago.

Here are references:

http://en.wikipedia.org/wiki/Galle_(Martian_crater)

http://dictionary.reference.com/browse/bertram