Former detective Tom Potter encounters a woman he investigated as a missing child ten years ago, recognising the gold defect in her eye from the photograph on the case file. Potter is aghast that Blair Gray is alive because he arrested and convicted a man for her murder.
While trying to figure out what happened to the girl, Potter is called to assist with a triple homicide at a campsite in Scotland’s Galloway Forest Park. When an oil company is subsequently attacked by eco-zealots, Potter wonders if there is a link to the slaughtered tourists.
Potter’s inquiries take him to the headquarters of South African Sylvester Kriel, the charismatic leader of an environmental lobby group. Suspecting Kriel’s organization is not all it seems, Potter unearths a trail that leads back to his decade-old case and the man he sent to prison.