Board Thread:Legitimate Canon Questions/@comment-65.93.139.213-20150630121457/@comment-26547223-20150702154517

Deaton said that a werewolf who was turned by scott or who is in scott's pack can steal a true alphas powers, that's why Peter was getting Malia and Liam to kill Scott and that's why he didn't kill Scott himself when he was a berserker.