May, 1937, and London prepares to crown a new king. At the height of the Coronation celebrations, Detective Chief Inspector Archie Penrose is called to the BBC to investigate the murder of a famous broadcaster, a death which Josephine Tey suspects is linked to a decade-old scandal. With Archie's hands tied by politics, it is left to Josephine to get to the truth. Soon she is forced to confront at first-hand the deadly consequences of love, deceit and betrayal.