DCS Ian St Clair is called to investigate a tragic and unexpected murder in an ex-mining town as news of the crime threatens to inflame historic tensions.
As Ian and Kevin are called to the scene of a second murder, news breaks of a former spy in the community at Gary’s memorial service. Meanwhile, Scott remains at large.
In a bid to protect those involved, Ian finds himself determined now more than ever to find the spy cop. The community attempts to heal in the wake of its loss.