The United States boasts the highest incarceration rate in the entire world. Perhaps not coincidentally, mass incarceration has been a financial boon to the private prison industry. Privatization of prisons is seen by some as a solution to state governments' budget problems, but the mission of these for-profit companies is not necessarily aligned with the reform system. The diverse perspectives in this volume examine the history of private prisons in the United States, whether they are more concerned with rehabilitation or financial profit, and what impact they have on criminal justice laws and society at large.