As the sun rises over an idyllic Greek island, Carla Finch lies dead on a lonely road. Only her friend Helen is with her, and only Helen knows how Carla died. But from the start their alliance was based on fantasy and lies and Helen is unable to break the cycle, even in the face of catastrophe. Carrying her dark secret back to England, Helen is haunted by guilt and tragedy. And as she desperately tries to rebuild her life, a web of mysterious events draws her to the centre of her dead friend's world, to her family and above all to Daniel, the man Carla loved. But when a figure from the island nightmare threatens to expose her secret, Helen is forced to confront the truth, leading her into terrifying danger and ultimate redemption.