In a large house in London's fashionable Chelsea, a baby is awake in her cot. Well-fed and cared for, she is happily waiting for someone to pick her up.In the kitchen lie three decomposing corpses. Close to them is a hastily scrawled note.They've been dead for several days.Who has been looking after the baby?And where did they go?Two entangled families.A house with the darkest of secrets.A compulsive new thriller from Lisa Jewell.