<p>Sheriff McAllister was randomly picked person to be Red John. Obvious. Bruno Heller messed up hard with the show,this is why he won't show anything about Red John,this is why he ended it so quickly. They just couldn't make it.Here are some reasons why it was a random pick:
</p><p>- Lorelei said Jane and RJ shook hands. Bullshit,McAllister and Patrick didn't even introduce to each other.
</p><p>-Lorelei said that she wonders how they didn't love each other from that moment (when they shook hands) - actually Patrick mocks the sheriff,beats him several times on "Rock,scissors,paper",they are completely different
</p><p>-Partridge was firstly intended to be Red John,but too many people got aware of that since the Season 2 finale,so Heller couldn't allow that to happen. The only one with so much connection to William Blake(the author of "Tyger,tyger") - Partridge. Heller underestimated his audience and had to change it.
</p><p>-Napa county is 60 miles away from Sacramento. There is no way for the sheriff to be absent so many times and for such long periods whenever he wants.
</p><p>-How can McAllister predict that Jane will find out about that tattoo and prepare a body , replace DNA and whatever there was with the help of Brett Partridge weeks before the event in the Jane's house,Jane didn't have a single lead to identify Red John,so there was no meeting ahead.
</p><p>-The list contained persons that Jane shook hands with,this is the main requirement,and he never did with McAllister.
</p><p>-The Blake assotiation is a very secretive and bla-bla-bla,they only call you when they want,but there was a meeting between 3 members just to talk about PJ?
</p><p>
</p><p>I can probably think of 2-3 more reasons,but I think that noone can explain these.
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