Whoever Red John is, it is someone who knows that Lisbon won't be getting any back-up because the local police blame her for the officer being shot and also knows her well enough that she will go into the house without back-up. He would also guess or know that Lisbon illegally put a trace on all of the suspects on the list. It has to be one of the law enforcement people and most of these clues point more towards Bertram than to the others. I wonder if the lack of back-up (actually the knowledge that the local police are out to get Lisbon) is the clue that Heller said would be presented in this episode.
