Board Thread:WARNING - SPOILERS AHEAD/@comment-11593970-20130706054527/@comment-209.141.131.212-20130711002353

It's unlikely to be Peter considering the whole wolfsbane fiasco the Darach caused. Peter Hale is a werewolf and couldn't be able to be exposed to and manipulate wolfsbane like the Darach did without tripping out like the others. Therefore he would not do that and put himself at risk (good ol'peter is to smart for that); ergo, Peter couldn't be the Darach.