O desaparecimento de Carlton Flynn, que acontece 17 anos depois do desaparecimento de Stewart Green, provoca uma reação em cadeia nas vidas das pessoas ligadas a eles.

Lynn and Lucy are lifelong best friends, their relationship as intense as any romance. Neither has ventured far from where they grew up. Lynn, who married her first boyfriend and whose daughter is fast growing up, is delighted when the charismatic, volatile Lucy has her first baby boy. Lucy, however, does not react to being a mother as Lynn expects. Soon, they find their friendship is tested in extreme circumstances.

Segue os acontecimentos décadas depois, quando os novos ricos, incluindo a família Trenchard, se relacionam com as classes altas de Londres e os segredos do passado ameaçam com emergir.