This book explains the existence of illicit markets throughout human history and provides recommendations to governments. Organized criminal networks increased in strength after the enforcement of prohibition, eventually challenging the authority of the state and its institutions through corruption and violence. Criminal networks now organize under cyber-infrastructure, what we call the Deep or Dark Web. The authors analyze how illicit markets come together, issues of destabilization and international security, the effect of legitimate enterprises crowded out of developing countries, and ultimately, illicit markets' cost to human life.