Brendan Foley has defied his family to become a DI, but your origins are inescapable...

The Warrington nick is home to some of the brightest and most ambitious officers. While they possess a unique knowledge of the town and its citizens, they are also working with a lack of resources. When a mass grave is discovered on their patch and 27 bodies are discovered, a jarring connection will call DI Foley's authority into question.

DS Iona Madison, a loyal officer who balances her work with her boxing career, feels closer to her team than her own family. And when this case explodes, everything she thought she knew will be challenged.

From the very beginning, the team are up against the clock: many within the force are adamant this small team cannot take on a case this complex, especially as initial investigations point to murky organised gangs in Manchester and Liverpool being involved. The 'Warrington 27' case will test the team's acumen, grit and morals.

But just how far are they prepared to go to solve the case of the Warrington 27?