They are the long-lost secret diaries that will give new and extraordinary insights into Adolf Hitler's private life. In a world publishing coup, decades after being lost, the discovery of the intimate and horrifying leather-bound journal by the Mail is set to cause a global sensation. The handwritten diaries will give never-before-seen insights into Hitler's life as the most evil man in history launched the Second World War. Later today MailOnline will begin to showcase these diaries for the first time after more than 80 years, offering a treasure trove to historians.