A nightingale sang loudly and Harry opened his eyes with a start. For a moment the dream lingered and he blinked bleary-eyed, confused. The sky was a few shades lighter, the window casting strange shadows. In a panic, Harry realised it was nearly dawn and hurriedly sat up to trudge through his homework. The scroll at his feet read "The reason ouroboros tongue is harvested on moonless nights and has no substitute — twelve inches'.