A missing girl. A family torn apart. An unsolved mystery. Twenty years ago, Claire and Lydia Scott's older sister vanished without a trace. Her disappearance had a devastating effect on their family. Now another teenage girl is missing, and the circumstances of her disappearance are hauntingly similar to Julia's . . . It's up to Lydia and Claire to revisit their past, unearthing the secrets that destroyed their family all those years ago. Will they be able to face what they find along the way?