Unlock a magic that could change the world ... or destroy it. From bestselling, award-winning author Kiran Millwood Hargrave comes an epic new fantasy: 'This tale of adventure and magic is as brave as it is exciting' Independent 'Destined to be a classic' Garth Nix 'A stunning adventure' Cressida Cowell 'Pure joy to read' Jasbinder Bilan When her sister vanishes after a mysterious earthquake, Ysolda sets off on a rescue mission. But these are dangerous times, and soon she is forced to strike a deadly bargain with the wolf queen herself. Join Ysolda and her loyal sea hawk as they embark on an epic quest to save her sister and unlock the earth's most powerful magic ... From the author of The Girl of Ink and Stars, Julia and the Shark and The Mercies, the Geomancer trilogy is a new modern classic for readers young and old.