Not really a theory on RJ but I am really looking forward to episode 18:  Behind the Red Curtain.  It involves a murder that interrupts a musical preparing for Broadway.  I would just love it if Jane made some disparaging comment about musicals and Lisbon declared her love for Phantom of the Opera to which Jane could reply that the Phantom is a singing serial killer then Lisbon could zing him with his similarities to Sweeney Todd.  I just watched that today and the similarities are interesting.  Both Jane and Sweeney lost a wife and daughter.  Both are on a quest for revenge that gets people killed around them (Bosco, Panzer, Jared, etc might have all lived if Jane hadn't been actively pursueing RJ).  There may be more similarities depending on how Jane's story ends - will he learn like Sweeney that it would of been better to "learn forgivingness and try to forget."  I really can't see Jane catching RJ without one of the team getting killed to give weight to the victory.  Hopefully that's why Lorelei was brought in so that the team doesn't need to lose someone but frankly I don't see Lorelei living past episode 16 in this season and definitely not past the S5 final.  Someone important is going to have to die at the very end of the show and it better not be Lisbon.

And for a single RJ thought:  I believe Mashburn is RJ and I scan the summaries of the episodes to look for clues as to which one he might be in this season - it better be one of them . . .  Well, like IKWRJI said, Mashburn is part of the nouveau riche and could easily be patron of the arts.  Maybe he's sponsoring the show.  Too bad the cast list isn't out yet.