Red John will be a character yet to be seen in the series... Although his accomplice(s) might already be known to au. This gives the writers creative plot room until the time when it Is appropriate to name the mastermind. Two reasons... Red John has influence in the FBI, which is higher up the food chain than the CBI whose characters we see. Second, when ared John is revealed, the plot tension goes, meaning the end of the series. Red John will be introduced to viewers in the final season.