As 'Dear Amy', agony aunt for a local newspaper, Margot Lewis has dealt with all sorts of letters - but never one like this... Dear Amy, I've been kidnapped by a strange man. I don't know where I am. Please help me, Bethan Avery This must be a cruel hoax. Because Bethan Avery has been missing for nearly two decades. As the present-day search intensifies for another missing schoolgirl, Margot takes the letter to the police. They let Margot in on a little secret that confirms her darkest fears and tangles her up in the search for the sender. It could save one young girl's life and cost Margot her own...