Private detective Jackson Brodie finds his own need for resolution sparked by three investigations, including that of two sisters who discover a shocking clue to the disappearance of their third sister thirty years earlier.

On a hot summer day, Joanna Mason's family slowly wanders home along a country lane. A moment later, Joanna's life is changed forever... On a dark night thirty years later, ex-detective Jackson Brodie finds himself on a train that is both crowded and late. Lost in his thoughts, he suddenly hears a shocking sound... At the end of a long day, 16-year-old Reggie is looking forward to watching a little TV. Then a terrifying noise shatters her peaceful...

Jackson Brodie has relocated to a quiet seaside village, in the occasional company of his recalcitrant teenage son and an aging Labrador, both at the discretion of his ex-partner Julia. It's picturesque, but there's something darker lurking behind the scenes. Jackson's current job, gathering proof of an unfaithful husband for his suspicious wife, is fairly standard-issue, but a chance encounter with a desperate man on a crumbling cliff leads him into...