My view is that RJ serial killer does not exist.I think PJ's wife took her own life after first killing the child. This would explain what Kristina Frye told PJ about his daughter not suffering. Her mother would have taken care not to hurt her. The note that PJ found on the door was a suicide note. The deaths caused him to have a breakdown and he created the Red John persona in his mind to take the blame for what happened as his wife was obviously ill and he didn't see it. He is now trying to find redemption by using his talents to help the police. Every time we see a smiley face (resembles P.J.'s face), it corresponds not to an RJ murder but to a death for which PJ somehow feels indirectly (if not directly) responsible/guilty. Eg. Jared Renfrew could have been murdered by anybody but would still be alive if PJ had not had him released from jail. Rosalind Harker is not dead but the smiley face represents PJ's guilt as he treated women the way Rosalind was treated. He didn't manage to use his skills to read Rebecca who obviously worked in the building with them and prevent Bosco's murder, so feels guilty. Same thing for murders committed before his family's death. PJ. feels in some way responsible. PJ. killed Panzer to stop him killing again and prefers to deal with it in his head by blaming RJ. Now his dark side/RJ persona is starting to take over his life. The more things go wrong, the more he blames RJ. The Tiger Tiger poem represents the struggle between his light and dark sides. Which side will win out in the end? This theory does not obviously explain everything but would explain certain holes in the procedure as certain things are happening in PJ's head and not in reality.
