Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-1658978-20140304142251/@comment-202.46.143.120-20140307120312

It was hinted at there might be something a little supernatural about Stiles in the season 2 ep 'Raving' when Stiles was covering the outside of the building with Mountain Ash. Peter said Lydia's hidden powers had to be 'triggered'. I'm pretty certain Lydia will play a big part in brining Stiles back. So maybe they bring him back by Lydia 'triggering' whatever hidden abilities Stiles has, and that is what 'changes the body'.