Reviewing European policy with respect to different phases in the criminal justice chain, the contributions in this book range from looking into the extension of criminalization in the sphere of trafficking in human beings and labor exploitation, to the operability of cross-border execution of sentences involving deprivation of liberty. Most contributions look into the need to develop a conceptual framework to support future policy making, pointing to the lack thereof with respect to liability of legal persons, ne bis in idem as an EU principle, cross-border effect of disqualifications, and cooperation with private security actors. One essay looks into the public expenditure in different phases of the criminal justice chain, based on a case study on the public expenditure of Belgian drug policy. Additionally, from a historical and comparative perspective, the book analyzes specific European and Chinese interrogation rules to provide a solid context for the current situation and to support future legal reforms. (Series: Governance of Security (GofS) Research Paper - Vol. 7)