The reporter examines gun crime and racial tensions in the US city, where the homicide rate is 12 times the national average and the police are frequently regarded with distrust. He follows the police department's homicide officers as they investigate a shooting, spends time with a family that has lost a loved one to gun crime, and meets a former gang leader who has become a social activist dedicated to finding solutions to her city's problems. He also examines the impact of a recent police shooting. Last in the series.