So I have no idea who might be RJ, but there are a lot of people who think that Brett Partridge is RJ. And this is why I'm not sure about that:
If Partridge pretended to be dead it would be to keep Lisbon alive so that she would think he was dead, right? BUT I think in that case Lisbon may remember someone grabbing her from her feet! And that could only be him! So she would know Partridge was not dead, so that may work against him. That's why I have concerns about this theory.
Besides, I think that if there's no body, Patrick wouldn't be fool enough to think Partridge (being one of the suspects) is dead.
On that big clue Heller talked about, something about the sink Lisbon stares at makes me wonder. As I read somewhere before, I don't think it is possible that the door would just open without any help. I think someone was there. And also the car when she's out of the house, that was suspicious. I don't think anything they put in the show is a coincidence, so all of that has to be there because of a reason.
