From killers to conservationists, Carnegie-shortlisted Chris Vick tells the story of three generations of the Kristensen family, their history as whale hunters and later their mission to save the great whales and our planet.

There are 1.3 million great whales left in the Earth's oceans today. Climate activist Abi and her AI computer Moonlight are on a mission to protect the planet. When they uncover whale song recordings made by Abi's great-grandfather, a whale hunter, Moonlight discovers a pattern... ...the songs are a map to a future that could rescue the whales and rescue the world. 'A hard-hitting, beautifully written call to arms' Guardian * Daily Mail Best Book of 2022 * * Big Issue Kids' Best Book of 2022 *

"A book about climate change that offers hope as well as despair, wrapped in an action-packed adventure. A powerful call to arms" - Editor's Choice, The Bookseller

"Charged by super plotting, the infectious passion of young eco-campaigners across three generations, and a powerful environmental call to action... A rousing, enchanting triumph" - LoveReading4Kids

"Wonderful imagery... A thought-provoking piece of Young Adult fiction, with author Chris Vick drawing on his Norwegian heritage and his work with the charity Whale & Dolphin Conservation" - Armadillo Magazine

"Fascinating science underpins this tightly plotted and gripping adventure that reminds us how fragile the ecosystem is" - Daily Mail

"Vick's generation-spanning eco-thriller zooms around up-to-the-minute themes" - Observer