Board Thread:False Info and Speculative Discussion/@comment-4148963-20140804232238/@comment-3425694-20140917014252

Even before the fire, Peter has always been egotistical and power hungry. He believed that Talia wussified the hale pack and had she listened to him, they may have seen the fire coming. This may also be one of the reasons he killed Laura. Peter wants to be the alpha and not only that, he wanted all supernatuals in Beacon Hills dead at one point. The Hale house fire basically confirmed his suspicions and amplified his vision of a world where he's "The Alpha".