About the book: year / “Don't worry, Miss Granger. These are completely harmless, slightly improved distraction charms. You will not see your partner’s face, you will not be able to identify and recognize him. This is a magical carnival - allow yourself a night of easy, thoughtless decisions, smiles, laughter, dancing and dreams. The spell will end at sunrise. Or, if the established couple has sincere feelings and, after dancing together, they coincide, forcing the magic of Hogwarts itself to intervene, the trouble will subside on its own».