Amanda Blakefield's life is a happy one, with her husband Jimmy and their son Luke. But when Amanda is left an enormous inheritance by a man she has neither met nor heard of before, her life starts to fall apart. Amanda becomes embroiled in the world of the Worralls, where Martin Worrall is head of a family bound in past secrets. As Amanda is drawn further and further into past events and relationships, all of their lives are turned upside down.