Will Hickox is a decorated FBI veteran with a legendary ability to cultivate informants, much closer to retirement than to the days when he earned the nickname "Wild Bill." Operation Fallout should cut the head off of the Chicago mob and provide a fitting capstone to his career. When Outfit boss Gianni Bevilacqua dies and the resulting war places Fallout in jeopardy, Hickox does what he can to save it, and his retirement plans with his lover, Madeline Kilmak. Wild Bill examines the stresses of Operation Fallout from the law enforcement, criminal, and personal perspectives, as Will and his peers fight to keep the investigation afloat amid the power struggle between Gianni's son and elder statesman Frank Ferraro. Torn between wanting closure to the investigation and starting his retirement, Hickox weighs the dangers of involving himself and Operation Fallout in the war, blurring the line he walks with his informants.