In a world torn apart by war, a brother and sister fight to find each other. The sweeping new novel from New York Times bestselling author Katherine Arden.Discover the Sunday Times bestselling supernatural historical fantasy from the author of The Bear and the Nightingale, a spellbinding, sweeping novel set in the trenches of WW1.WATERSTONES SCIENCE FICTION & FANTASY BOOK OF THE MONTH‘Darkly beautiful and deeply humane.' Ava Reid, bestselling author of A Study in Drowning ‘One of the best historical fantasies I've ever read’ Emma Törzs, bestselling author of Ink, Blood, Sister, Scribe 'Wonderful storytelling. Inventive, haunting and deeply moving.' Sarah Winman, bestselling author of Still Life Amid the falling shells of Flanders Field, magic and mystery fills the air…