I think that Red John has been several people throughout the show and we will be finding out exactly who was the one responsible for Patricks family because not one person holds all the characteristics of red john look at the body build of the guy who poisoned Rebecca and then look at the body build of the red john that saved Patrick they are way different so I'm sure there is a main red john but we will find out that to stay ahead of Jane red john had to be several people and stiles is going to do something to have Patrick or red john kill him. The only thing that makes me wonder about haffners involvement is he told Lisbon that there was a come upens coming did he mean taking over for stiles or red john is killing the competition.