Talk:Peter Hale/@comment-5352890-20130602032958/@comment-4091815-20130602034400

We don't know - but the prevailing theory here is that his return was an extension of the Werewolf Healing ability with a little extra Hocus Pocus thrown in with the full moon and the blood of an Alpha.

He was only dead for a few weeks and was never cut in half which is believed to be the only way to 100% kill them so they stay dead.