Everybody knew the story of harry potter and the death eaters , who they didn't know of is his Slytherin twin sister who was 'evil '..... Everybody knew of the snobby rich pretty boy Draco Malfoy , but they didn't know his ravenclaw brother who was the first to break the long line of Slytherin Malfoys... And definitely nobody knew of the crazy Lestrage girl that brought them together and was ready to destroy the so called 'Light side ' for everything they've done
4 parts