Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-13965604-20130914204104/@comment-6207588-20130920125146

Bennett89 wrote: Wasn't the reason he killed Laura because he was still basically being controlled more by his "Animal" side since he was still so badly hurt, and was just acting purely off his animal instincts? Scott found evidence (the picture of the deer with the vendetta mark on it) that Peter was aware enough to instruct his nurse to get it to Laura to lure her to Beacon Hills. But I'm not sure I entirely believe that's the whole story. In the flashback we got of Peter he did indeed look like he wasn't all there.

I also wonder if there might not have been anger at her on his part. According to Talia, vendetta (revenge) is a right...a tradition thousands of years old...it might have been considered Laura's duty as the alpha to avenge her family...something she obviously had failed to do....but that's just speculation on my part. Hopefully they will eventually re-visit this and give us some answers in the future.