How Nazism Was Born: The three-episode series, aired on the History Channel (411 by Sky) from Monday 11 April at 9.00 pm, explores the crucial phase of the Second World War, with the clash between two equally ruthless dictators, Hitler and Stalin.
At the height of his power, the Führer attempts to deceive the Russian leader with a plan to invade Britain while preparing the attack on the Soviet Union.
Stalin, however, has a spy infiltrating the German headquarters.
With Germany close to defeat on the Eastern front, resistance grows.
Defined by the Times "A lesson on how - very quickly and with extreme ease - a democratic country can turn into a totalitarian dictatorship", Come il Nazismo, produced by the BBC, tells the stories that explain the failure of dictatorships and how the tyranny that has almost destroyed freedom, it ended up annihilating itself.