there was a childhood memory that jane said he never shared with anyone, but it turned out he did tell someone, a psychiatrist. red john got the infoz from her/him and killed them. this is where jane got the clue fom the psychiatrist notes that red john was afraid of heights.Wasn't there something else that RJ knew about Jane -- something very personal? At one time it did seem like PatrickwasRJ. Would've been a cool twist. Instead we got this lame conclusion.
Series was never great, so shouldn't come as a surprise. Simon Baker and Amanda Righetti are the only reasons I still watch.
Right before Jane does what he does, Red John spurts out something like "Ill tell you how I got the list. I am a real psychic."