In the mountains, some secrets are deadlier than the storms.

A man wanders lost on a filthy night in the Black mountains of Wales.

Despite the valiant efforts of the rescue Services, he does not survive.

DCI Evan Warlow and his team are thrust into a case that will shake their rural community to its core. As they investigate, they uncover a sinister network of drug trafficking and long-buried grudges.

With each revelation, the case grows more complex, leading Warlow to an abandoned farmhouse that holds grim secrets. As a relentless storm batters the landscape, the team races against time to piece together the fragments of a gruesome puzzle.

But in a case where everyone seems to have something to hide, how can Warlow separate truth from lies before more lives are lost in the unforgiving Welsh wilderness?