The essays in this collection were initially presented as papers at a workshop on Regulating Deviance that took place at the International Institute for the Sociology of Law in Onati, Spain in June 2007. The main aim of the workshop was to gather together experts in the fields of criminal law and procedure, criminology, legal history, law and psychology and the sociology of law in order to focus on the future directions for the criminal law in the light of current concerns with state security and regulating ‘deviant’ behaviour. The papers were subsequently revised and edited to take into account the discussions that took place at the workshop