Danny Solis represented Chicago’s 25th Ward on the City Council for more than 20 years. But in June 2016, FBI agents approached him about his own alleged wrongdoing. He agreed to wear a wire, and the evidence he gathered helped the feds indict Michael Madigan,

Daniel Solis, the once-prominent Chicago alderman whose turn as an FBI mole took down the state’s two longest-serving Democratic power brokers, walked out of a federal courtroom on Tuesday with his gaze fixed on the floor.

The star witness in the corruption trial of Michael Madigan is done testifying after six days of being questioned. Defense attorneys finished their second day of cross-examination of the former Chicago Alderman.