In early 1872, while Chicago is still smoldering from the Great Fire, Irish detective Frank Hanley is assigned the case of a murdered Jewish rabbi. His investigation proves difficult when the neighborhood's Yiddish-speaking residents are reluctant to talk. But when the rabbi's headstrong daughter, Rivka, unexpectedly offers to help Hanley find her father's killer, the detective receives much more than the break he was looking for. Their pursuit of the truth draws Rivka and Hanley closer together and leads them to a relief organization run by the city's movers and shakers. Along the way, they uncover a web of political corruption, crooked cops, and well-buried ties to two notorious Irish thugs from Hanley's past. Even after he is kicked off the case, stripped of his badge, and thrown in jail, Hanley refuses to quit. With a personal vendetta to settle for an innocent life lost, he is determined to expose a complicated criminal scheme, not only for his own sake, but for Rivka's as wel