We don't have to look any further than Brett Partridge to know that he is Red John and I'll attempt to cross the other suspects off the list to prove it. Bare with me please
Gale Bertram- remember back in Season 3, when Patrick come up witha clever scheme to reveal Red John's mole in the CBI? well Gale was a suspect then too. If he was Red John wouldn't he have sent the assassin to the apartment number he was given rather than have O'loughlen send the assassin to his apartment number he was given? And if he was Red John he would have quickly figured out it was a ruse based on the fact that O'loghlen got a different room number than he. Red John didn't dicover it was a ruse until after Van Pelt told O'loughlen about the whole situation. So that's Bertram off the list!
Bret Stiles- based on evidence from both the Rosland Harker and Sophie Miller, it's safe to say good ol' Visualise leader Bret Stiles is too old to be Red John! However, I do indeed believe the theory that Bret Stiles is the father of Red John. He is also
Reede Smith- According to Sophie Miller's evaluation, Reede is too obese to be Red John.
Thomas Mcaslister- According to the latest episode of the Mentalist, it is revealed that Mcalister does not suffer from Vertigo. Whereas it is previously stated in the episode prior that Red John most ceratainly does! However, this may be considered illegitmate. (honestly I wouldn't mind seeing him as Red John.)
Bob Kirkland- If Kirkland was Red John then why in the preview for the next episode (Red listed) is he literally torturing Jane to reveal the names on the list of Red John suspects an less he is NOT Red John. Kirkland is far too obvious and the fact that he was introduced in season 5 really puts doubts in my mind, its far too late in the show. I honestly think he hates Red John and also has and agenda against him. I'm calling it now, that he'll probably be killed in next Sunday's episode. (God forgive me if i'm wrong.)
Ray Haffner- Ray is my second choice for Red John, if Partridge is indeed dead. Crossing Haffner off the list is difficult so i'm only going on minor clues. Bare with me. He is two inches too tall to be Red John and he was introduced in Season 4! like Kirkland he was debuted too late! However, I know that is not a lot to go off.
So too sum it all up, Red John is notorious for quoting William Blake's famous poem Tyger Tyger. William Blake also painted a picture titled a "Brace of Partridge." a coinsidence? I think not!
Rember the simple soloution is the usually the correct one.