Episode 10, Chicago (Drain the Oceans)

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Summary

Draining Lake Michigan uncovers Chicago's secret history. The latest sonar technology exposes a catastrophe that killed 300 people, solves a tragic Christmas mystery, uncovers a game-changing naval...

Draining Lake Michigan uncovers Chicago's secret history. The latest sonar technology exposes a catastrophe that killed 300 people, solves a tragic Christmas mystery, uncovers a game-changing naval training program from World War II and reveals an engineering marvel that stops the fastest growing city in the world from choking to death.

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