Pointing his wand at nothing in particular, he gave it an upward flick and said Levicorpus! inside his head. "Aaaaaaaargh!" There was a flash of light and the room was full of voices: everyone had woken up as Ron had let out a yell. Harry sent Advanced Potion-Making flying in panic; Ron was dangling upside-down in midair as though an invisible hook had hoisted him up by the ankle.

Chapter 12