After WWII the British Royal Family sent agents over Europe to grab documents regarding the former Edward VIII and his contacts with the Third Reich, specifically the possibility of his returning to the throne if England were to fall.
What if, a few months after WWII, the documents slipped through and it became established that King George VI's brother had indeed been conspiring with the Nazis in 1940? What would happen to Edward? What would happen to the Royal family for trying to cover this up?