So after the explosion when Lisbon walks inside we see a foot on the floor, even though none of the suspects were barefoot, so where did that come from?
It seems awfully fish that the Sheriff would die along with the 2 sitting on the couch all the way on the other side of the room, but the other 3 would be just fine.

Also, keep in mind RJ was scheduled to be revealed at November 17th, BEFORE episode 7 got delayed, so actually he was supposed to be revealed at episode 8, an episode which btw is called "Red John".
So if tonight's episode showed me anything new is that Bertram is not RJ and that at least one of Bret, Ray and Thomas are still alive and one of those is RJ.