AMY McCULLOCH is the author of Breathless and Midnight, as well as eight novels for children and young adults, including the internationally bestselling YA novel The Magpie Society: One for Sorrow. She is the youngest Canadian woman to climb Manaslu in Nepal, the world's eighth-highest mountain. She has also summited the highest mountain in the Americas, Aconcagua, completed the Marathon des Sables in the Sahara Desert, and visited all seven continents. She lives outside London.