When the skeletons of a young woman and a baby are uncovered on a long-abandoned farm in Hvalfjörður, it is clear they were buried years apart. West Iceland CID begins to investigate the disturbing discovery, aware that someone has gone to great lengths to keep the past hidden. In Akranes, Karitas, a young single mother seeking a new start, settles in with her four-year-old son and rents a basement flat from an eccentric landlord. A cautious sense of happiness returns when she meets the boy next door. But when news breaks that a local girl has been murdered, Karitas must decide who she can trust, knowing that one wrong choice could place her and her child in danger. Detective Elma is drawn into the case, forced to navigate long-hidden family secrets to understand a killer's motive, while trying to hold together her increasingly troubled relationship with Sævar.