TV Guide's Mega Buzz has the answer as to what's next for Patrick Jane on THE MENTALIST:
"Jane will claim that he killed Red John in self-defense after he learned that Red John was communicating with his mole, Agent O'Loughlin. (We all saw the gun and the phone call, right?) Not so fast, says series creator Bruno Heller. "Not only is there no cell phone with any calls from an FBI Agent named O'Loughlin, but no gun will be found [by the police]," he says, hinting that someone is still pulling the strings. "Within five minutes of the season-opener, Jane is in jail for homicide with no way out. And he and Lisbon, to some extent, start questioning his sanity." There we go — the insanity defense!"