It is true that Bruno Heller, said that Red John is of the 7 and therefore all based on a character name from the list. But Red John is an organization. Ergo all are Red John. The tip is to find "Red John" who killed Patrick's wife. So always Heller said it was like playing Wally. We must look to Red John, of all Red John who killed the wife of PJ. Greetings.