Long-lost secret diaries of 'Hitler's English girlfriend' are today unveiled by the Mail. In a world publishing coup, aristocrat Unity Mitford's leather-bound journal reveals fresh insights into the dictator widely reviled as the most evil man in history - whom she worshipped. One of the famous Mitford sisters, Unity gushed about the Nazi monster in her flowing handwriting. Decades after her diaries were lost to historians, their discovery by the Mail is set to cause a global sensation. The young upper-class beauty scandalised British society by fawning over Hitler and becoming closer to him than any other Briton. She confided...