A Thunder of MonstersFor fans of How to Train Your Dragon and The Hobbit, the sizzling, magical fantasy adventure that began with A Darkness of Dragons reaches a thunderous end Return to a world of dragons, song spells, pipers, and battles. Patch Brightwater and his friend Barver, the dracogriff, are trapped on a mysterious island full of monstrous beasts. Their shapeshifting friend, Wren, is being held prisoner by the Piper of Hamelyn, but she's working hard to escape.