<P> In the season 6 episode `` Red John '' , the eponymous serial killer 's identity is revealed to be Thomas McAllister , the sheriff of Napa County , portrayed by Xander Berkeley . After unmasking himself to Patrick Jane , McAllister discloses that he is the founder and overall leader of the secret organization known as the Blake Association . </P>
<P> In the season 6 episode `` Red John '' , the eponymous serial killer 's identity is revealed to be Thomas McAllister , the sheriff of Napa County , portrayed by Xander Berkeley . After unmasking himself to Patrick Jane , McAllister discloses that he is the founder and overall leader of the secret organization known as the Blake Association . </P>
who was red john in the tv series the mentalist
who was red john in the tv series the mentalist
Thomas McAllister
Thomas McAllister