Will we get more information about Red John?

Heller: We won’t be going back.  …  Once the curtain is drawn back from these evil Wizard of Oz
characters they tend not to be very interesting dinner companions. They
tend to be ego-maniacal one-track minds … There is a great deal of
[backstory], if anyone waned to ask those questions, I’d be happy to
answer. There’s a lot of questions about motivations and what [Red John]
was doing and when and how… It makes for great Internet fodder, but
it’s not very entertaining for a weekly TV audience.


Ok guys, this is it. No explanations at all. Thank you Bruno Failer for nothing!