Board Thread:WARNING - SPOILERS and FALSE INFO AHEAD/@comment-72.228.155.211-20130709095438/@comment-68.186.246.224-20130716180754

I'd say that random girl from Ep. 1 is likely, but she was trying to help Isaac so her motives are for the "good guys" it seems. That rules her out.

Gerard's not dead, he's out. I see him as an imobilized supernatural library at this point.

Matt's a good point. The figure in the fire did look male and was disfigured and resembled a kanima a bit. I see him as an option.

Kate Argent? I really just don't see it.

Allison's mom? Also don't see it. But  Chris' and Gerard's recent involvement does point to the possibility

Derek's sister (not Cora, the original alpha) is possible, as is any dead member of the Hale family.

Ms. Morrel is a strong possibility. She's similar to Deaton, but clearly with the Alpha pack. She's also not dead so that rules her out, but she's definitely involved.

My gut tells me it's not a werewolf or someone bit by a werewolf. I really think it's gunna be a new character, but one that died before the show (hence why I really think it's a member of the Hale family). Jeff hinted it'd be someone dead that we didn't expect, but he also has a tendency to take what he said and make it even more unexpected - Derek's father, a member of the Argent family, someone associated with Deaton... I don't think it'll be someone we've "met", as in been in the show in person yet. It'll be someone we really just don't expect or can anticipate.

Personally, I can't wait till they kill the bastard, I've had enough of this magical cowardly playing around. I see Deaton being a really important character in stopping Darach, if not killing it.