When Joni was 14, her best friend Gracie Darling disappeared during a séance. Some 27 years on, the local kids in a small town get their kicks with a game of ‘Playing Gracie Darling’ – but the seemingly innocent game turns sinister when another girl disappears. Joni, by then a child psychologist, returns to the town and partners with a police sergeant Jay to uncover the truth, while Gracie’s sister Ruth faces a mother’s worst nightmare when her own daughter vanishes under hauntingly similar circumstances.
一九三〇年代初，一起女大学生宿舍离奇死亡案案发上海滩，中央巡捕房探长关岑（王星越 饰）因此结识热爱侦探小说的女大生陆以真（吴佳怡 饰），并由此牵扯出一起十七年前的女童绑架案。两年后，陆以真参加上海第一批女警招考，关岑成为她的直属上司。在案件迭出的巡捕房二人联手，重启调查女童拐卖案，驱散了遮蔽在他们头顶的迷雾与噩梦。
