Bobby Connor is the most hated man in Chicago. The police detective has turned State's evidence against his fellow officers, and with their trial looming, he's in fear for his life. Unable to turn to the police for help, he calls Stuart Ferguson, a former investigative reporter now scraping together a living as a freelance travel writer. Ferguson finds himself faced with two mysteries: who is trying to kill Connor, and what has compelled him to testify against his brothers in blue?