Ilinois was a free state before the Civil War. But one man found a loophole, and he used it to create a reverse underground railroad, kidnapping freed slaves and selling them back to people in slave states.
Meet the author who wants the world to know about it.
Backstory airs Saturday nights at 10:30 on WGN. Catch up on previous seasons of Backstory with the podcast at WGNtv.com/Backstory via Stitcher, iTunes, Google Play, or wherever you get your podcasts.