As the threat of war with Germany hung over Britain, Winston Churchill gathered the country’s brightest minds at a remote gothic mansion in Suffolk to work together on an invention that could help the Allies to victory – the Chain Home radar system. The episode has inspired a new novel of courage, belonging and hope, Under a Wartime Sky. In this edition of Historical Fiction, Malin Hay talks to its author Liz Trenow.   See acast.com/privacy for privacy and opt-out information.