See archival images and images of individuals featured in Secrets of the Dead: China's Terracotta Warriors

(Premieres Wednesday, May 4) The extraordinary story of China’s 8,000 terracotta warriors begins two centuries before the birth of Christ. The First Emperor of China was preparing an extravagant tomb for his journey into the afterlife - and decreed that he be protected forever by a monumental army.

Follow the route used by Vrba and Wetzler in their “great feat of escapology” when fleeing the Auschwitz death camps.

This appalling massacre was one of Germany’s most heavily-guarded secrets, carefully concealed from the outside world. But two Auschwitz prisoners, Rudolph Vrba and Alfred Wetzler, were determined to expose the horrors of the Nazi genocide.

Learn the stories of two survivors of the Nazi death camps that fell in love after the war and what life was like growing up as a child of Holocaust survivor.

The death factory at Auschwitz was a closely guarded secret of the Third Reich – until two men, Rudolph Vrba and Alfred Wetzler, escaped to tell the world.

Watch the full episode of Secrets of the Dead: Lost in the Amazon

Read the full transcript for Secrets of the Dead: Lost in the Amazon

Read the production biographies for Lost in the Amazon

View the production credits for Lost in the Amazon.