The criminal attacks that occurred in the United States on 11 September 2001 have profoundly altered and reshaped the priorities of criminal justice systems around the world. Domestic criminal law has become a vehicle for criminalising ”new” terrorist offences and other transnational forms of criminality. ”Preventative” detention regimes have come to the fore, balancing the scales in favour of security rather than individual liberty. These moves complement already existing shifts in criminal justice policies and ideologies brought about by adjusting to globalisation, economic neo-liberalism and the shift away from the post-war liberal welfare settlement. This collection of essays by leading scholars in the fields of criminal law and procedure, criminology, legal history, law and psychology and the sociology of law, focuses on the future directions for the criminal law in the light of current concerns with state security and regulating ”deviant” behaviour.