Book excerpt: In recent times the question of private sector involvement in public affairs has become framed in altogether new terms. Across Europe, there has been a growth in various forms of public-private cooperation in building and maintaining (new) penal institutions and an increasing presence of private companies offering security services within penal institutions as well as delivering security goods such as electronic monitoring and other equipment to penal authorities. Such developments are part of a wider trend towards privatising and marketising security. Bringing together key scholars in criminology and penology from across Europe and beyond, this book maps and describes trends of privatising punishment throughout Europe, paying attention both to prisons and community sanctions. In doing so, it initiates a continent-wide dialogue among academics and key public and private actors on the future of privatisation in Europe. Debates on the privatisation of punishment in Europe are still underdeveloped and this book plays a pioneering and agenda-setting role in developing this dialogue.