The Puzzle of Prison Order presents a theory of why prisons and prison life vary so much. While many people think prisons are all the same—rows of cells filled with violent men who officials rule with an iron fist, life behind bars varies in incredible ways. In some facilities, prison officials govern with care and attention to prisoners’ needs. In others, officials have remarkably little influence on the everyday life of prisoners, sometimes not even providing necessities like food and clean water. Why does prison social order around the world look so remarkably different? This book shows that how prisons are governed—sometimes by the state and sometimes by the prisoners—is tremendously important. It investigates life in a wide array of facilities—prisons in Brazil, Bolivia, Norway, England and Wales, a prisoner of war camp, women’s prisons in California, and a gay and transgender housing unit in the Los Angeles County Jail—to understand the hierarchy of life on the inside. Drawing on theories from political economy and a vast empirical literature on prison systems, the book offers a framework for understanding how social order evolves and takes root behind bars.