Matron Eva Luckes returns in the powerful series from the London hospital, dramatised from original records. Revolution grips the East End as an explosion brings fears of a bomb, and Ethel Bennett and Dr Millais Culpin struggle to control the angry victims. When detectives arrive, Matron Luckes and Chairman Sydney Holland fear the hospital is in danger of becoming an extension of Scotland Yard. Meanwhile, Sister Ada Russell battles with irascible star surgeon Mr Henry Dean, whose addiction to cocaine is an open secret. And ambitious young Dr Ingrams faces catastrophe in the operating theatre.