History's Mysteries - Season 15 (2002)

An examination of smallpox as a biological weapon investigates intelligence reports that claim Iraq, North Korea and Russia have stocks of smallpox virus intended for military use.

Discover one of the saddest and most shocking stories of the Crusades.

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Behind the familiar tales is a complicated figure whose real legacy may not resemble the legend.

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Investigators argue that the story of Frankenstein is based in reality.

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