This video is going viral on Tube right now and everyone is excited about it: Hermione Granger is one of the most gifted Hogwarts' student. She is diligent girl and indisputably pattern of all other pupils. Miss Granger spends spare time learning. Quite often Hermione loses count of time and keeps long hours in library... So was this time... But there was someone besides her in the empty hall this time... Someone invisible...