Welcome to Hitler’s English Girlfriend: The Secret Diary of Unity Mitford.  Over the last eight months, the Mail has been working on a top secret project… publishing Unity Mitford’s diary for the very first time.  Unity Mitford is one of the most notorious women in British history; a high society debutante, who befriended Adolf Hitler as the threat of war loomed across Europe.  The Mail received the diary from an anonymous source a year ago, and have had it professionally authenticated by a leading forensic services company. Now, in a world exclusive, the Mail is able to give you access to Unity’s secret diary for the very first time… A Daily Mail production.