"In the process of dissecting and analyzing one of the most notorious murder cases of the late nineteenth century, O'Brien has illuminated not only the subterranean world of the Irish nationalist revolutionaries of the Clan na Gael but also many aspects of the broader story of Irish American Chicago. The book is meticulously researched and elegantly written-a star in the social history of the immigrant group, the movement, the period, and the city." (James R. Barrett, author of The Irish Way: Becoming American in the Multi-Ethnic City)