This episode takes us into the corridors of power where Germany's top political mastermind sees an opportunity to use the sudden popularity of the Nazis for his own ends. This sets off a chain of miscalculations, backroom deals and power grabs that will propel Hitler from the fringes of political activism into the heart of government. Hitler wants to become absolute leader of a single-party German state - standing in his way is democracy and the rule of law. After leading a failed coup in 1923, Hitler decides on a new strategy for taking power: instead of being revolutionaries, the Nazis will become a legitimate, mainstream political party operating under the veneer of legality. Hitler aims to win power democratically and then destroy democracy from within. To achieve his goal Hitler must overcome Germany's political elite, including Paul von Hindenburg, the president who looks down on him, and, behind the scenes, political mastermind Kurt von Schleicher, who wants to use him. Whilst this political intrigue plays out at the highest level of government, Hitler faces another obstacle at ground level - a Jewish lawyer called Hans Litten, who is out to prove that the Nazis are far from the legal, legitimate party they claim to be.

At the start of 1933, Hitler is the chancellor of Germany but he does not have absolute power - there is still a democratic parliament beneath him, a head of state above him and the rule of law hanging over him. Hitler sets his sights on dismantling the German state. When Hitler calls a general election to increase Nazi representation in the Reichstag, Hermann Goring sees an opportunity to impress by taking out the left-wing opposition. Goring orders a raid on the Communist Party HQ in the hope of finding evidence of a planned uprising. He doesn't find it, but when a fire breaks out in the Reichstag it is an opportunity to pin the blame on the left. Goring then has the green light to use the stormtroopers to brutally round up communists and social democrats - terror reigns in German streets.

Adolf Hitler has been chancellor of Germany for just under a year. It is a challenging balancing act. On the one hand, the Nazis must be mindful of President Paul von Hindenburg and Vice Chancellor Franz von Papen, who are members of Germany's traditional aristocratic ruling elite. On the other, there is the Nazis' own power base - the stormtroopers - millions of angry, disenfranchised men who wreak havoc on German streets. The stormtroopers are led by Ernst Röhm, one of Hitler's oldest and closest friends. Röhm wants Hitler to fulfil his promise to sweep away the traditional ruling class. Hitler owes Röhm: he has paved the way for Hitler's political career, and his stormtroopers have helped to eradicate left-wing opposition to the Nazi Party. Now, though, they're a potential threat - stormtrooper violence is undermining Hitler's credibility as chancellor.

At the peak of his power, Hitler now faces fellow ruthless dictator Stalin. He tries to deceive Stalin with a plan to invade Britain, all while preparing an attack on the Soviet Union.

The Nazis have lost in Moscow. Hitler and Stalin take charge of their armies, with no one to hold them back. In Stalin Hitler has met his match, it's now a fight to the death.

Facing defeat on the Eastern Front, Hitler retreats. Deep rifts emerge as his inner circle vies for power, the resistance gets a student voice, and an enemy within plots to kill Hitler.