Something to think about.  PJ never confirmed that RJ was right about the 7 suspects.  The 7 suspects are who RJ assumes PJ would end up with.  PJ has always manipulated the team to do as he wants.  PJ has another list of suspects nobody knows about. 

The only past RJ and PJ have is PJ went on live tv and insulted RJ.  That is why his family was killed.  PJ made it a personal vendetta to get his revenge and RJ has accepted the challenge.  Your typical cat and mouse game. 

Check out my earlier theory and tell me what you think.