Surrey: Twenty-one-year-old Lily Monrose has only been married for three weeks. When her new husband fails to come home from work one night, she is left stranded in a new country where she knows no one. Then the police tell her that her husband never existed ... East Yorkshire: Alice Lake, a free-spirited single mother of three who earns a living by making art out of old maps and selling it on the internet, finds a man on the beach outside her house. He has no name, no jacket, and no idea what he is doing there. Against her better judgement, she invites him in to her home. But who is he, and how can she trust a man who has lost his memory?