![Underground Railroad: The Secret History](https://image.tmdb.org/t/p/w500//gc6zrMcozzLoIn0WLqMaz54O3vu.jpg)
Underground Railroad: The Secret History
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January 30, 2022
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Documentary
Archaeologists and historians use cutting-edge technology to investigate and explore some of the biggest mysteries surrounding the Underground Railroad, a secret network that helped enslaved African Americans escape to freedom.
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Cast
![Clark Johnson](https://image.tmdb.org/t/p/w300//ejNR1am9cDQOEaJ555IsvXo7XPO.jpg)
Clark Johnson
Narrator (voice)