Underground Season 2: A sneak peek of what is in store

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It is the story of runaway slaves, looking for freedom and it's back.

'Underground' season 2, premieres tomorrow, March 9, on our sister station WGN America.

As FOX 8's Gabe Spiegel explains in the video above, there are surprises and historical figures in store for this season.

He sat down with the actors and producers of the show, who say get ready for another wild run.