When the Duke and Duchess of Windsor arrived in Florida on 18th April, 1941, they were looking forward three days of relaxation. But unbeknownst to them, the night before their ship docked, President Roosevelt had instructed the FBI to launch an extraordinary covert intelligence exercise. Recently released under the US Freedom Of Information act, this FBI report reveals that the Duke and Duchess of Windsor harboured pro-Nazi sympathies and that Edward was lined up to go back to the throne as a Nazi puppet if Hitler defeated Britain. And it's not just this FBI report that is so damning. Recently, a number of key documents have been released, as well as the sensational diaries of Sir Alan Lascelles, the Duke's private secretary. Together these prove that Edward VIII was indeed a traitor to his country and that his sympathies lay squarely with Hitler's regime. Now, for the first time, the full, inside story is told; a tale of treachery, corruption and depravity at the heart of the British monarchy - and one which could have changed the course of history.