the whole RJ finale seems like a big disappointment. Someone that apperared in very few episodes the past 6 years, someone with no emotional connection with the main cast. RJ will prove to be either someone totally indifferent to the series (like Mcallister or Reede) or obviously suspect (like Bertram (he even said it himself he is duplicitous)) or Haffner-Kirkland (with obviously suspect behaviours in their few appearances) or Stiles (what a surprise, wow) or Partridge who was the main suspect from s01e01. I mean whoever from them is RJ, in my opinion the writing is just bad. No drama, no surprise, nothing! RJ is just another crazy bad guy. 

That said, there are other good series out there, fortunately!
P.S. I will take everything back if the writers surprise us with someone else, but I sincerely doubt it.