'This is a welcome contribution to transnational policing scholarship, introducing comparative 'law in action' studies in the field.' Criminal Law and Criminal Justice Books ’This is a work of great originality:Hufnagel’s monograph analyses with faultless clarity the challenges and practices of cross-border law enforcement cooperation in Australia and the EU - and identifies a range of lessons one system could take from the other. A book of equal interest to academics and senior law enforcement officers and policy-makers.’ Jörg Monar, College of Europe, Belgium ’Written from a comparative socio-legal perspective, this book provides unique insights into law enforcement cooperation in the European Union and Australia, which are borderless societies with remarkable similarities. Containing a wealth of references, it is a must-read for tutors, students and practitioners in the field of security and policing who seek to enrich their academic insight beyond the realms of black-letter law.’ Monica den Boer, University of Amsterdam, The Netherlands 'In a contemporary world in which crime and criminals freely and frequently traverse the borders of nation states the need for effective and sustained international cooperation between law enforcement agencies has never been greater. This excellent book provides a blueprint for such cooperation, based on a rigorous comparative appraisal of collaborative policing in Europe and the Antipodes.' Duncan Chappell, University of Sydney, Australia