Cooper and Fry investigate the disappearance of a teen girl. Suspicion falls on her wealthy family and disgruntled employees, as well as the local tale of the Black Dog of Edendale.

When a brutally beaten corpse is found in a disused quarry, Cooper and Fry's investigation leads them to an old missing person case and a mysterious local group with dubious interests.

After the body of a photographer is found dead lying among an ancient stone circle at a tourist spot, Cooper and Fry are drawn in to a mystery that sends shockwaves through the team.