For eight brief years, before he was tragically killed in a mysterious air crash during the Second World War, Prince George, Duke of Kent, son of King George V and Queen Mary, and his beautiful wife, Princess Marina of Greece and Denmark, were the British monarchy's, indeed, high society's, most glamorous royal couple; and as golden royal icons they are still remembered. As a young man, voraciously addicted to drugs and sex, with men as much as women,...