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.
Dyfan Dwyfor is a Welsh actor, originally from Criccieth and now living in London. He attended Ysgol Eifionydd, Porthmadog and Coleg Meirion Dwyfor before going on to Ysgol Glanaethwy. He graduated from the Royal Welsh College of Music & Drama in 2007. Dwyfor is a Welsh speaker, has blue/grey eyes and dark brown hair and is 5 ft 10 in (1.78 m) tall. He began acting in the drama series Rownd a Rownd on S4C. His first appearance in film was in Oed yr Addewid ("Age of Promise"); the drama won three awards at BAFTA Cymru and a Golden FIPA. He won the Richard Burton Award at the National Eisteddfod in 2004, and received a BAFTA Cymru nomination for his role in the film Y Llyfrgell in 2017.