Despite being deemed an illegal activity, participation in sexual activity behind prison walls is a frequent occurrence. Catherine Marcum and Tammy Castle provide a comprehensive study of all aspects of prison sex. Incorporating inmate, correctional officer, and policymaker perspectives, and debunking myths, the authors consider the full range of consensual and nonconsensual behaviors. They also address the physical, emotional, and legal repercussions of participating in prison sexual relationships. Their analysis is enriched by a case study of a privately run correctional facility, revealing the effects of the Prison Rape Elimination Act at the local level.