Steeltown Murders will launch at 9pm on Monday 15 May on BBC One, with all episodes then available on BBC iPlayer.

Based on a true story, the drama centres on the hunt to catch the killer of three young women in the Port Talbot area and the remarkable story of how – in the first case of its kind – the mystery was solved almost 30 years later using pioneering DNA evidence.

The cast includes Philip Glenister, Steffan Rhodri, Keith Allen, Priyanga Burford, Sharon Morgan, Siôn Alun Davies, Scott Arthur and more.