Haven't seen the LEAKED episode, but the ways others are describing it, I'm sure its the real deal. People are complaining about the horrible acting and everything else but also about the sound effects and music. The sound effects and music not being there means that the final editing had to happen. This also means that there could have been re-takes for the scenes in which acting is below par according to the fans. So the episode is real and the identity of Red John might remain same but just the feel and reveal could be better on Sunday. I hope its a decent episode. I hope we don't have to become Red John ourselves and kill the writers and editors of The Mentalist one by one.