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Episode Guide
- 6. Code Wars Nov 15, 2016
- American code breakers have given the United States an edge in every conflict in American history.
- 5. Secret Prisons Nov 8, 2016
- History has been locked away for centuries in the hulls of ships and in the depths of a copper mine.
- 4. Gold Nov 1, 2016
- Man has gone to extreme and often deadly lengths to get gold, a very rare treasure on Earth.