The renowned historian of the Third Reich takes on the conspiracy theories surrounding Adolf Hitler and the Nazis, in a vital history book for the 'post-truth' ageThe idea that nothing happens by chance in history, that nothing is quite what it seems to be at first sight, that everything is the result of the secret machinations of malign groups of people manipulating everything from behind the scenes - these notions are as old as history itself. But conspiracy theories are becoming more popular ...