'This impressive, well-structured and readable book will appeal to both academic and policy/practitioner communities. It focuses on the role, behaviours and impact of a highly influential cadre of actors operating in theatres of collaboration - the boundary spanners. It situates them in the fields of public management and governance combining both inter-disciplinary theoretical rigour with empirical insights from policy and practice.'--Paul Williams, Australian National University'Individuals and organizations working in liminal spaces - ''boundary spanners'' - have often been speculated as occupying key, but often hidden, roles in public management and governance. While some work has been done on figures such as entrepreneurs and brokers, boundary-spanning and boundary spanners have heretofore not received detailed book length treatment. This volume undertakes this task, advancing our knowledge of these actors and their activities, both as they have operated historically and in their enhanced contemporary role in recent efforts to promote co-production and other kinds of collaborative governance arrangements.'--Michael Howlett, Simon Fraser University, Canada and National University of Singapore