About this season
Secret History was a long-running British television documentary series. Shown on Channel 4, the Secret History brandname was used as a banner title in the UK, but many of the individual documentaries can still be found on US cable channels without the branding. It can be seen as Channel 4's answer to the BBC's Timewatch.
Episodes (4)
1. The Real Noah's Ark
Aired 14 September 2014
Know what this is about
2. Hitler's Hidden Drug Habit
Aired 19 October 2014
Hitler's Hidden Drug Habit Documentary discussing Hitler's fraudulent physician, his poor health and possible drug dependency.
3. WW1's Forgotten Heroes
Aired 2 November 2014
Former Royal Marines commando Arthur Williams embarks on a journey to explore the experiences of nearly two million British soldiers who suffered life-changing injuries and disabilities during the First World War.
4. The Great Wall of China: The Hidden Story
Aired 30 November 2014
With access to the first nationwide survey and state-of-the-art drones mapping the Great Wall of China, this documentary offers new evidence that reveals its extraordinary magnitude, rewrites its millennia-long history and decodes its complex signals system. Using cutting-edge chemistry, the programme also finds out what has kept the wall standing for so long - a simple cooking ingredient found in kitchens across the world.