Eliot Ness and the Untouchables, along with Treasury agent Frank Wilson, were instrumental in taking down Al Capone.

However, there was another force working behind the scenes, a group of Chicago businessmen, the so-called “Secret Six.”

In this segment for Backstory, Larry Potash talked to a man who has a personal connection, as well as insights to the secrets.

Backstory with Larry Potash airs Sunday nights at 6:30 p.m. and 11 p.m. on WGN, or stream it anytime on the WGN+ app on your smart TV with Amazon Fire, Roku, and Apple TV.

Check out the Backstory podcast at WGNtv.com/Backstory via Stitcher, Apple Podcasts, Google Play, or wherever you get your podcasts.