Board Thread:WARNING - SPOILERS AHEAD/@comment-11593970-20130706054527/@comment-13533960-20130727035539

I think it is Lydia. There must be a reason she was immune to the bite, druids cant become werewolfs. Also, she has discovered many of the dead bodies. Peter used her once to bring him back to life, and I am guessing he is using her to sacrifice people in starting a battle against the alpha pack, especially now that he is not strong enough to fight against them. They said druids are strongly connected with nature, well Lydia did run through the woods naked for two days! I am guessing she doesn't know she is being used by peter again.