This book offers an in-depth exploration of Jacob A. Riis's work as a police reporter and pioneering photographer in late 19th-century New York City. Focused on themes of poverty, crime, and urban misfortune, Riis's work highlighted the lives of marginalized groups such as day laborers, the unemployed, and the homeless. Dag Petersson presents a comprehensive monograph, detailing Riis's writings, photography, and his ideological concept of "The Other Half," which examines individual and social conditions. Additionally, the book examines how Riis's efforts contributed to the evolving discourse on urban poverty in the twentieth century.