In Morriston Hospital in Swansea in 1994 a group of ordinary middle-aged Welsh men stepped into the unknown by taking part in the world's first medical trials for the drug that became Viagra.
The hunt to catch the killer of three young women in the Port Talbot area in 1973 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. Contrasting the policing methods of the 1970s with the forensic breakthroughs of the early 2000s, the series portrays a town dealing with the repercussions of an unsolved case three decades on, and asks if justice can ever truly be found.
The Welsh actor Steffan Rhodri was born and raised in Morriston, Swansea, Wales. He is best known for his work in the films "Submarine"(2010); "Harry Potter and the Deathly Hallows: Part 1" (2010); "Ironclad" (2011) and "Under Milk Wood" (2015). On television he portrayed Dave Coaches in "Gavin and Stacey".