It can't be McAllister? that's just to easy.. There must be someone who is in charge, someone you never notice ? what about the women who interred the church? she's gone when the FBI interred the church.. Later in the show you'll watch her walk way close by the FBI cars. There is much more, I think! 

The sheriff isn't smart enough, RJ wouldn't just die like that, not after all this time.. If RJ is so smart and PJ have been searching for 10 years, why should he reveal himself just like that? I think RJ is much smarter than that. Don't hate, just my thoughts.