East Yorkshire: Single mum Alice Lake finds a man on the beach outside her house. He has no name, no jacket, no idea what he is doing there. Against her better judgement, she invites him in to her home. 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.
It was meant to be a harmless stag night prank. A few hours later four of his best friends are dead and Michael Harrison has disappeared. With only three days to the wedding, Detective Superintendent Grace - a man haunted by the shadow of his own missing wife - is contacted by Michael's beautiful, distraught fiancée, Ashley Harper. Grace discovers that the one man who ought to know Michael Harrison's whereabouts...