Marc Mc Memamin introduces the Documentary On One production that shone the spotlight upon an unsung Irish hero of WWII and inspired a best-selling book - listen to Richard Hayes: Nazi Codebreaker above. Imagine if one man helped alter the course of World War Two. And imagine if that man was Irish. There's no need to imagine because it happened. Not on the battlefields of France or Japan but in a room in McKee Barracks on Dublin’s North Circular Road... Listen to Documentary On One: Richard Hayes: Nazi Codebreaker above. During the Second World War one of Nazi Germany’s most...