Season 27.
Season 1.Season 2.Season 3.Season 4.Season 5.Season 6.Season 7.Season 8.Season 9.Season 10.Season 11.Season 12.Season 13.Season 14.Season 15.Season 16.Season 17.Season 18.Season 19.Season 20.Season 21.Season 22.Season 23.Season 24.Season 25.Season 26.Season 27.Season 28.Season 29.Season 30.Season 31.Season 32.Season 33.Season 34.Season 35.Season 36.Season 37.Season 38.Season 39.Season 40.Season 41.Season 42.Season 43.Season 44.Season 45.Season 46.Season 47.Season 48.Season 49.Season 50.Season 51.
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Episode 1.Fall of the Leaning Tower
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Episode 2.Time Travel
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Episode 3.The Killer's Trail
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Episode 4.Island of the Spirits
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Episode 5.Decoding Nazi Secrets
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Episode 6.Voyage of Doom
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Episode 7.Electric Heart
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Episode 8.Tales from the Hive
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Episode 9.Lost on Everest
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Episode 10.Secrets of Lost Empires: Medieval Siege (1)
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Episode 11.Diamond Deception
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Episode 12.Secrets of Lost Empires: Pharaoh's Obelisk (2)
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Episode 13.Trillion Dollar Bet
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Episode 14.Secrets of Lost Empires: Easter Island (3)
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Episode 15.Mystery of the First Americans
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Episode 16.Secrets of Lost Empires: Roman Bath (4)
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Episode 17.Lost Tribes of Israel
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Episode 18.Secrets of Lost Empires: China Bridge (5)
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Episode 19.What's Up with the Weather?
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Episode 20.Stationed in the Stars
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Episode 21.