Full of heart, drama and beauty, this sweeping fantasy inspired by ancient folklore will draw you into a secret world within Britain's waterways. 'This book is a gift of rare imagination and luminous writing. A classic in the making' KATYA BALEN 'I loved this book so much. It feels like a contemporary classic' ALICE WINN 'Bishop's writing transforms Britain into a magical network of rivers, channels and lochs that will fill you with wonder' ANN SEI LIN Kelda has always protected her little sister Isla from danger on the rivers, and from the suspicions of their community. For Isla cannot breathe underwater - and so her very existence is forbidden by silvermen's Lore. Now the rivers of England are growing sick: monstrous creatures are awakening and a fierce torrent of blame falls upon Kelda's family. When betrayal comes, the sisters escape on a desperate journey upstream. Joining forces with a mysterious boy, Kelda discovers the darkest depths of her kind's secret history. But to save both her sister and the very life of Britain's waterways, Kelda will have to make a sacrifice - one that will change her life forever. Cover art by Thy Bui