Chicago is a world-class city, but it is also a city in crisis. Crime is up, schools have repeatedly shut down due to conflict between City Hall and the powerful teachers' union, and COVID-19 only deepened the entrenched poverty, institutional racism, and endless tug of war between the city's haves and have nots. For four years, the person at the center of this storm was Lori Lightfoot. A groundbreaking figure-the first Black, gay woman to be elected mayor of a major city and only the second female mayor of Chicago-she knew the city was at a critical turning point when she took office in 2019. But the once-in-a-lifetime challenges she ended up facing were beyond anything she or anyone else saw coming. Chicago Tribune reporter Gregory Royal Pratt offers the first comprehensive behind-the-scenes look at the tumultuous single term of Mayor Lightfoot and the chaos that roiled the city and City Hall as she fought to live up to her promises to change the city's culture of corruption and villainy, reform its long-troubled police department, and make Chicago the safest big city in America.