HELLOOOO...
First of all, PLEASE accept my apologize for possible mistakes in my writing! Well, my English isn't advanced!
That's it.Up to this episode(6*6) it somehow seems that the series is going to convince us that RJ maybe PJ, Or vice verse :)
But I think the director know what we think...Although it's maybe true that P.Jane himself is a serial killer.All together, I think RJ is not PJ!(Althogh the director know that how we think! we think that if RJ is PJ, so there will be no surprising for the rest of episodes, so it can't be acceptable...so RJ is not PJ. But well, maybe just because of this, the writer know PJ as a person who has more than one characteristic. WOW,It's sophisticated!)
In my opinion, RJ knows a lot about PJ! So MP3 PLAYER had a file which had made by RJ himself(Forced Sophie to say whatever he wants) to lead CBI (probably in latter episodes) to PJ! For example, Lisbon will remember the Audio file and put together other things she faced before to figure out PJ is RJ and she was deceived for those years!!! And now we have sth for the next season(7)! Maybe CBI will arrest PJ as RJ and send him to prison! So for the next season,PJ has to escape and also catch RJ!
(It will be very COOL if one of PJ's friends is the RJ! just like the movie "the usual suspect" in which the main one is always near to the officer and also in police station!...AND it will be more COOL if RJ is a female! I know it's wierd...but maybe she used a male when he talks to PJ)
By the way, I think "tiger,tiger" is nothing but a group that MAYBE leaded by RJ!!!
At last, one question remains...How can RJ guess those 7 suspects 2 months before PJ?!! I know the director is aware of this and can guess that we may assume PJ as RJ! But as i told you before, I don't thinks so! Therefore, There must be a good answer that is going to be revealed later!!!
(I'm also thinking about this theory that RJ and PJ are the same person but they're in competition! Maybe the series is just about an inner game between GOOD & BAD inside one's mind that are totally separated by each other...like the short novel "doctor jekyll and mister hyde." You know what i'm saying if you read this book! But then I can't find any reason for producing season 7)
Don't think a lot! There are much more than many possibilities that maybe some of them are beyond our imagination and you can find just in the HELLER's brain. What the hell! :)