Secrets are divulged and stories of espionage, conspiracy, murder, sabotage and greed are uncovered.

This documentary series examines the Einsatzgruppen, Nazis responsible for the mass murder of Jews, Romani and Soviet prisoners in Eastern Europe.

Examining the life and times of Adolf Hitler and following the full arc of his ascent, tyrannical reign, criminality and undoing.

A reassessment of the role Albert Speer played in the Third Reich. Speer, who was ultimately convicted at the Nuremburg trials and served a 20-year prison sentence, was known for designing many of the Third Reich's buildings and for being Hitler's minister for war production.

Daniel Costelle and Isabelle Clarke have found at the NARA (National Archives in Washington DC) almost four hours of footage, mostly in colour, filmed by Hitler's mistress, Eva Braun between 1938 and 1944. It's an unbeleivable eyesight on Hitler's private life from the happy life in the "Eagle's nest" till his suicide in his bunker.

The year is 1940 and Nazi Germany is at the height of its military prowess, having captured most of Europe and eyeing the Soviet Union to the East. The Russian military command suspects hostile intent from Germany and so arranges for its spies to infiltrate ranks of the German military and the SS.

Alexander Belov is a Russian spy, who travels from Soviet-held Latvia to Nazi Germany under an alias of Johann Weiss. His mastery of the German language, steel nerves and an ability to manipulate others help him to use his connections in the SS to ascend the ladder of the German intelligence.

He uses his position to identify sympathetic Germans, who help him to procure vital intelligence, and to help local resistance movements in their collective fight against Nazism.