When Has "Forbidden" Worked?

What happens when a school has a group of supernatural being that are all best friends or related? Then, add a party involving the whole school to celebrate the graduation of some of the students. Throw in a few teachers the principal and some other staff shady characters and a party that will last a week where no one can leave or enter until it is over. You just might end up with a very terrifying and likely unfortunate series of events for the school and some people and no one to accuse. There will be confused police and a happy group of people that no one suspects. Read if you dear. Will be deaths and other types of scenes. You have been warned.