Rise of the Third Reich

National Geographic's "Secret Voice of Hitler" takes a look at one of the world's most enigmatic men. The documentary includes an unauthorized recording of Hitler kept hidden for more than 60 years. Could this evil personified in fact be one of history's most well-guarded frauds? We know he was a nutcase; maybe he was really a woman!

At the end of World War II, Adolf Hitler faced the reality of defeat and committed suicide. Then his body mysteriously disappeared. The FBI spent years tracking false leads and sightings of Hitler. What happened to the German leader's remains?

The death camp at Auschwitz was considered ground zero for the killings during the Holocaust, a place where thousands were starved and 1.1 million died, but there are only a small number of known photos of this infamous place - until now.

Recently declassified documents provide new insight into the numerous attempts to kill Hitler -- from briefcase bombs to exploding brandy to sniper fire -- and uncover what foiled these attempts to change the course of history.

A subterranean adventure under the streets of Berlin, following the work of a team of German archaeologists and historians exposing and exploring the last remaining structures of the Third Reich.

In the final months of World War II, American troops discovered a top-secret facility in Germany with an advanced batwing-shaped jet fighter. If Nazi engineers had had more time, would this jet have ultimately changed the outcome of the war?

Stripped naked, lined up at the edge of a ravine and machine-gunned. Rarely seen images and evidence tell the story of the tragedy that engulfed Europe when specialized units known as Einsatzgruppen struck terror in the hearts of millions.

Just prior to the end of WWII, the German military secretly undertook a massive push to design miracle weapons - colossal tanks, the world's first guided missiles and long-range bombers that could attack New York. Now, nearly 60 years later, a team of experts examine the original blueprints to determine if these so-called Wunderwaffen, or "wonder weapons," could have changed the outcome of the war.

Real bombs blow an entire neighborhood to smithereens when NGC recreates the London blitz of WWII. High-speed cameras, operating at 1,000 frames per second, capture blasts - fragments traveling almost 10 times the speed of sound move in slow motion and waves of fire roll through the street. Then, commemorating its 70th anniversary, intimate testimonies from survivors reveal what it was like to live through the bombings, never knowing whether your friends and family were dead or alive.

The Bismarck was a German battleship and one of the most famous warships of the Second World War. The lead ship of her class, named after the 19th century German Chancellor Otto von Bismarck, Bismarck displaced more than 50,000 tonnes fully loaded and was the largest warship then commissioned. Bismarck took part in only one operation during her brief career. She and the heavy cruiser Prinz Eugen left Gotenhafen (Gdynia) on the morning of 19 May 1941 for Operation Rheinübung, during which she was to have attempted to intercept and destroy convoys in transit between North America and Great Britain. When Bismarck and Prinz Eugen attempted to break out into the Atlantic, the two ships were discovered by the Royal Navy and brought to battle in the Denmark Strait. During the short engagement, the British battlecruiser HMS Hood, flagship of the Home Fleet and pride of the Royal Navy, was sunk after several minutes of firing. In response, British Prime Minister Winston Churchill issued the order "Sink the Bismarck!", spurring her relentless pursuit by the Royal Navy. Two days later, with Bismarck almost in reach of safer waters, Fleet Air Arm Swordfish biplanes launched from the carrier HMS Ark Royal torpedoed the ship and jammed her rudder, allowing heavy British units to catch up with her. In the ensuing battle on the morning of 27 May 1941, Bismarck was heavily attacked for almost two hours before sinking. This new National Geographic documentary is telling the story with the last survivors and visits the mangled wreck after sixty years.

It was known as "The Great Escape": 76 Allied prisoners of war, desperately crawling to freedom through a man-made tunnel. Within days, 50 had been brutally murdered by the Gestapo - a blatant breach of the rules of war. Meet the investigators who searched the globe to bring these murderers to justice, many of whom claimed they pulled the trigger solely to save their own lives. Join us as NGC reveals the untold story of one of WWII's most astonishing criminal investigations.

Was a member of the British royal family in cahoots with the Nazis? Recently declassified FBI files expose a surprising twist in the legacy of Edward VIII. In 1941, President Roosevelt had the Duke of Windsor investigated for suspicion of sympathizing with Nazi Germany. What the investigation found was an astonishing plot to put Edward VIII on Britain's throne as Hitlers Nazi puppet. Under different circumstances, could this relationship have changed history as we know it?

In 1945, the voyage of the Wilhelm Gustloff is a last chance for thousands of terror-stricken German refugees desperate to flee Soviet troops. The ship is on its way to safety when its suddenly torpedoed by a Soviet submarine, sending more than 9,000 people to their deaths in the icy Baltic Sea. Now, NGC examines the events leading up to the catastrophe and looks for answers to the mystery surrounding the fateful night.