I saw some theories that some people think it might Be Janes Father. I had an interesting idea hat its possible jane and Red John could be brothers or half brothers. Where is Janes parents anyways? Does anyone know where his father is? Did I miss a clue on the subject?Sometimes I thought at one point Bret stiles might be Red Johns Father.

ok, so i just finished season 2.
i have to say im kinda pissed. although i knew once it got later in the season without many redjohn episodes i figured we still wouldnt find out who he/she was.
this show hasnt ALWAYS been super predictable, but sometimes it has. i mean just going off of the last episode. when jane was is marleys room and the forensics guy came in ANYONE watching the show could see that they wanted to make us think it was him. i dont want to believe thats true cause its kinda lame if it was. i agree with a lot of you here, RJ was small maybe the voice was a little feminine but i dont think it was frye. although i do think she is involved in some way. i sometimes played with the thought that maybe it was someone on the team. not cho cause they did that whole episode on him and i just dont see it being him. but no one really fits the part. well i hope we find out soon cause im getting anxious i dont know if i can sit through another season and not find out.

im pretty sure kryistina's dead now so it couldn't be her. i don't think we know red john yet. im sure he would have kept an eye on his insiders so we may have seen him but i don't think he's anyone we know that well.

I think Kristina is one of Red John’s pawns. When she was confronted by Jane about going on TV, she had that serene look on her face, like she knew him so well. (Oh, I know…she’s a psychic. Whatever). She also talked about how Jane “lied about” Red John. She had the same look on her face, and calm speech that the secretary had when she was confronted…before she was killed, of course.