For sake of argument, I accept that RJ could still be any of the 7 suspects except for Reed or Bertram. Id rule Partridge out too, but to many people go crazy for him and might hurt them selves if it isn't him, so I wont. Please add more to this list as I am sure to have missed a few of the crazier theories/ideas...Also no offense if these are your theories. It is only my take after all...
What I will say, is here are some of the theories or comment I think are the most far fetched:
1. Partridge, twice confirmed dead is still alive. Maybe he is, but if so, it should be considered as a really weak/dull plot twist.
2. Fear of pigeons. Reall, are we going to find out that a huge glaring clue was that one of the characters fear of PIGEONS was a major plot point?
3. Ep 7 announces Bertram as ep 7 and titilates us to keep guessing in ep 8 who really is RJ and then it still ends up being no twist--Bertram. That would be pretty week.
4. RJ is not one serial killer but a title that three or more people share. That would be lame.
5. #4 plus one of those Red Johns being the son of Brett Stiles (He's old so defacto he must be RJ's father.
6. The man in the church in the promo is Mashburn because its the exact same hair...oh boy, nice try, that could be anyone.
7. Van Pelt is Red John
8. Craig Loughlin is the most hung of all characters...Well this one might be true. he is hot and does look like he swings a big stick...
9. Summer is not a dirty ho... please she has had more dingdongs in her than a urinal at the Cheesecake Factory.
10. So and so has the exact voice of RJ...yeah thats the thing thats going to connect us to the culprit...