Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-92.238.137.64-20140207010708/@comment-19765459-20140207014008

Maybe he molested Scott? There wasn't enough physical proof to arrest him for it, but the Sheriff and Stiles know it happened?

It has to be something that Scott would find deeply upsetting. After all, we're talking about the incredibly forgiving kid who has gotten past everything Peter did, and let Deucalion just walk away. For Scott to feel as angry as he does, after all these years, it would have had to have been bad.