The four-part series, based on Mark Billingham’s bestselling novel, winds up tonight with a harrowing episode pushing DS Helen Weeks to the limit.

In the conclusion to this second two-part story, Helen (an impressive MyAnna Buring) doesn’t let being nine months’ pregnant stand in the way of her dangerous search for the truth about the shooting.

As she begins to connect escalating local gang tensions with boyfriend Paul’s (Ben Batt) double life, she is met with a wall of silence – and the bodies start to mount up… Fisayo Akinade (Ordinary Lies’ Ziggy) stands out as a young gang member as this compelling, tightly plotted drama concludes.