Jacob Reckless has always been careful to keep the enchanted world behind the mirror secret from his brother. Until one day, Will follows him, unaware of the mortal danger awaiting him: attacked by a group of Goyl - stone-skinned humans who are conquering the world behind the Mirrors - Will turns to jade, their most sacred stone. Jacob desperately tries to save him, but only the fairies have the power to stop the Petrifying Flesh. Together with Will’s girlfriend Clara and the shape-shifting Fox, Jacob begins a perilous journey… This first volume of Cornelia Funke’s riveting Mirrorworld series introduces the brothers and their breathtaking adventures, in a magical, fearsome world.