The Greatest Unsolved Mysteries of All Time | Undercover History Updates S1 MEGA EPISODE | Nat Geo

Mystery of the Disappearing Skyjacker
In 1971, a man calling himself Dan Cooper hijacked a plane and requested $200,000. Cooper escapes with the money and is never seen again. Now with new evidence, experts hope to solve this heist.

Dark Secrets of the CIA
It's the Cold War's dirty little secret: a terrifying account of the CIA's efforts to expose unknowing members of the public to biological agents, hallucinogenic drugs and psychological techniques aimed at mastering the art of mind control.

Roswell UFO Secrets
On July 8th, 1947 the US army claimed to have found a 'flying disk'. But within hours they retracted the statement. Sixty years later, and the debate is still raging. Did the military recover dead aliens and their spaceship? If true, the US government has kept one of the greatest secrets in history; that we are not alone in the universe. If not, a footnote has become a legend.

The Real Boston Strangler
Handyman Albert De Salvo confessed to murdering 13 women, but new forensic evidence says police may have had the wrong man.

Ghosts of the Russian Royal Family
When Russia's last tsar, Nicholas II, and his family disappeared 90 years ago, eyewitness accounts said the family was brutally murdered. What really happened to them?

Moon Landings Declassified
First-person accounts from NASA astronauts and engineers expose the dramatic and little-known stories of the Apollo moon landings.

Undercover History Updates | S1 E1-6

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The Greatest Unsolved Mysteries of All Time | Undercover History Updates S1 MEGA EPISODE | Nat Geo
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