England, 1939. Ten-year-old Virginia Wrathmell arrives at Salt Winds, a secluded house on the edge of a marsh, to meet her adoptive parents—practical, dependable Clem and glamorous, mercurial Lorna. The marsh, with its deceptive tides, is a beautiful but threatening place. Virginia’s new parents’ marriage is full of secrets and tensions she doesn’t quite understand, and their wealthy neighbor, Max Deering, drops by too often, taking an unwholesome interest in the family’s affairs. Only Clem offers a true sense of home.
War feels far away among the birds and shifting sands—until the day a German fighter plane crashes into the marsh, and Clem ventures out to rescue the airman. What happens next sets into motion a crime so devastating it will haunt Virginia for the rest of her life. Seventy-five years later, she finds herself drawn back to the marsh, and to a teenage girl who appears there, nearly frozen and burdened by her own secrets. In her, Virginia might have a chance at retribution and a way to right a grave mistake she made as a child.