Bestselling author Tamora Pierce returns to the world of the Circle Opens quartet. This time, Evvy, a street urchin turned stone mage, must save an island nation. Now available in paperback!Four years have passed since Evvy left the streets of Chammur to begin her training as a stone mage. At fourteen, she's unhappy to be on a new journey with her mentor, prickly green mage Rosethorn, who has been called to the Battle Islands to determine why the plants and animals there are dying. Evvy's job is to listen and learn, but she can't keep quiet and do nothing. With the help of Luvo, the living stone heart of a mountain, Evvy uncovers an important clue. Now, with the island on the brink of disaster, it's up to Evvy to avert the destruction that looms ahead.