Elin and Charlie find themselves in the ancient Roman city of Pompeii before returning to the Fudget Fayre to discover that they may have unearthed the monstrous power of multiple evils.Following Elin's courageous battle with the Mudchalk Devil, her trusted magical weapon, the passion flower, whose melodies can be seen as well as heard, is stolen by the powers of a greedy society planning to wipe out the human race.Elin cheats death by dreaming awake, only to realise that her mission is not over.There have been books about music and books about magic, but never before has there been a book about Visible Music and the magical powers it can unleash, or where it becomes, in the wrong hands - Dark Music.Cover artwork by Paul Lanzon