Nina Landry is supposed to be taking her two children on holiday, away from the isolated winter bleakness of Sandling Island. But when the time comes to leave,Nina realizes that her 15-year-old daughter,Charlie, has yet to return from a night out.Minute by minute,Nina’s worst nightmare seems to be coming true.Has Charlie run away or has something more sinister happened? And why will nobody take her disappearance seriously? As day turns to night a series of half-buried secrets lead Nina from sickening suspicion to deadly certainty, and into a terrifying race to save her daughter’s life.