Board Thread:False Info and Speculative Discussion/@comment-26507522-20150703231744/@comment-4295751-20150704032338

well, Derek's roar didn't work back then because Cora and Boyd were massively out of control that night. They hadn't seen full moon for 3 months and then they were suddenly exposed to the 4th. Nothing aside from daylight was able to stop them. It's an exception.