Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-108.81.117.0-20140115224717/@comment-19765459-20140120211415

Those who can't do, teach...

The twins were in a pack, so they probably know a fair bit about werewolves, if only from having been around others. Derek also knows a lot about what werewolves can do, even if he cannot do it himself (like the mind meld thing).