i
thought the real red John appears first time in Season 3? so it can't
be Patridge, Stiles, MC Callister , Reede Smith or Haffner, because they
appears long before Season and/ or after season 3. İt is Gale Bertram.
you can clearly see that on season 5 episode 16. And the mentalist guy
on the last episode from season 5 looks like a brother from Bertram