In this episode of The Security Podcast author and former diplomat Tim Willasey-Wilsey reveals how he uncovered the role of a largely unknown British spy, who had managed to infiltrate the highest levels of the Nazi party, met with Hitler and helped convince the British government of the need to rearm during an era of appeasement. The Spy and the Devil covers the role of Bill de Ropp, a multi-lingual British agent recruited by MI6 after the First World War and who went onto to provide his handlers with 70 percent of all intelligence on the Nazis.