In S06E04 Promo we listen the message "A Trap has been set" then we see kirkland with jane... First time Jane went in a dangerous situation RJ came to save him, maybe they (Jane and Bob) are working together to remake this.
Red John doesn't wanna a PJ dead.
Bonus: I can't believe the show will finish with RJ history and focus another line for only 4 episodes, I guess the RJ case and the CBI are related.
