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Hunt down answers to history's biggest conspiracies and puzzles. History's Greatest Mysteries is a series that is currently running and has 1 seasons (20 episodes). The series first aired on July 10, 2016.

History's Greatest Mysteries is available for streaming on the HISTORY Vault website, both individual episodes and full seasons. You can also watch History's Greatest Mysteries on demand at Amazon Prime online.

1 Season, 20 Episodes
July 10, 2016
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History's Greatest Mysteries Full Episode Guide

  • Dig deep into the core of "The Rock" and its imprint on our national psyche with fresh and revealing interviews from those who know the true story of Alcatraz.

  • For over 400 years, the disappearance of 117 colonists from Roanoke Island has been America's oldest mystery. Now, a mysterious stone inscription may lead to uncovering the truth.

  • Travel to Egypt and join a team of archaeologists who have uncovered the lost fourth pyramid of Giza, and explore the most powerful - and arguably the most debauched - of all Egypt's dynasties.

  • In 1994, a journalist stumbled upon a manuscript from 1629 titled "Nostradamus Vatinicia Code" that contained cryptic images and watercolors by the visionary himself. How did the manuscript survive for so long?

  • Trace Lee Harvey Oswald's actions in the minutes, hours, and days following the events of JFK's assassination in Dallas.

  • Adventurer-geologist Dr. Martin Pepper sets out to prove his theory that the true Atlantis existed on the Greek island of Santorini, and was destroyed in the biggest volcanic eruption in human history.

  • History's most acclaimed prophet, Nostradamus, saw the arrival of three antichrists who would plague mankind. But who are they? Believers search his writings for evidence.

  • The sorcerer's stone was a compound in the Middle Ages that was said to grant immortality. Were alchemists' quests to find it based on sound scientific ground? And did some, as is still rumored, actually succeed?

  • In a country torn by bloody civil war, a Romanian prince seizes power, becoming known across Europe for both breathtaking courage and terrifying cruelty.

  • Examine clandestine organizations (past and present) with highly selective memberships and vague goals, and explore why so many people are convinced of their nefarious agendas.

  • Get an inside look at the secret protocols, elite security, and hidden history of the world's most public of private residences. The only thing more guarded than the White House itself are its secrets.

  • The search for the Loch Ness Monster has captivated the world for decades, but now a startling realization about "Nessie" might shatter this age-old myth. Could the Loch Ness Monster be dead?

  • Do texts other than the Bible reinforce the idea of Eden? Sift through the evidence to decode an age-old mystery about how paradise was lost, and where it might be found.

  • Since the 15th century, the Bermuda Triangle has mysteriously vanished an untold number of ships, planes, and lives, inspiring fear and speculation. Can today's scientific tools finally lay its mysteries to rest?

  • Originally stolen by the doctor trusted to perform his autopsy, scientists over the decades have examined the brain of Albert Einstein to try and determine what made this seemingly normal man tick.

  • In 1962, John and Clarence Anglin and Frank Morris broke out of the toughest penitentiary America had ever conceived: Alcatraz. Their bodies were never found. But new evidence could crack open the iconic cold case.

  • Best-selling author Brad Meltzer and his team examine claims that John Wilkes Booth actually escaped to freedom after murdering President Abraham Lincoln in 1865.

  • Recent discoveries of previously unknown hominids and breakthroughs in genetic technology have given a nation of Bigfoot believers new hope that this mysterious man-ape will be found.

  • A former FBI agent and a crime journalist dive deep into the D.B. Cooper case, revealing new information through exclusive interviews with nearly 20 experts and insiders.

  • Get unprecedented perspective from insiders into the baffling case of the man who, in 1971, hijacked a Northwest Orient flight, demanded $200 thousand in cash, and disappeared. Who is D.B. Cooper?