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Season 5 Episode
- Season 4 The Loch Ness Monster
- Season 4 Who is the Zodiac Killer?
- Season 4 The Assassination of JFK
- Season 4 The Lost Colony of Roanoke
- Season 4 The Phoenix Lights Phenomenon
- Season 4 The Ark of the Covenant
- Season 4 The "Missingest" Man in America
- Season 4 Blackbeard's Lost Treasure
- Season 4 Decoding the Mysterious Antikythera Mechanism
- Season 4 The Puzzling Pyramids of Egypt
- Season 4 The Hunt for Stolen Nazi Treasure
- Season 4 The Deadly Bermuda Triangle
- Season 4 The Search for Noah's Ark
- Season 4 Who is D.B. Cooper?
- Season 4 The Legend of Bigfoot
- Season 4 Unlocking the Secrets of Stonehenge
- Season 4 The Search for El Dorado
- Season 4 The Mysterious Havana Syndrome
- Season 4 Unlocking the Secrets of the Nazca Lines
- Season 4 The Hunt for Cleopatra's Missing Tomb
- Season 4 TWA Flight 800
- Season 4 The Hunt for Hitler
- Season 4 The Lost Gold of WWII
- Season 4 The Black Dahlia
- Season 4 Gardner Museum Robbery
History's Greatest Mysteries - Season 4 Episode 9 Decoding the Mysterious Antikythera Mechanism
7.40 48 minutes An ancient mechanical device found on a 2,000-year-old shipwreck has become known as the world's first computer. The machine is centuries more advanced than historians thought possible, but its origin and true purpose are shrouded in secrecy. Can modern technology finally unveil what the mysterious Antikythera Mechanism actually is?
