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.
Dal y Mellt (Welsh for Catch the Lightning) is an adaptation of the novel of the same name. It follows the troubled story of Carbo, as he is drawn into a world of wrongdoing, lies, secrets and theft.
