Book excerpt: This major collection contains selected papers from the third Public Law Conference, an international conference hosted by the University of Melbourne in July 2018. The collection includes contributions by leading academics and senior judges from across the common law world, including Australia, Canada, New Zealand, the United Kingdom and the United States. The collection explores the frontiers of public law, examining cutting-edge issues at the intersection of public law and other fields. The collection addresses four principal frontiers: public law and international law; public law and indigenous peoples; public law and other domestic fields, specifically criminal law and private law; and public law and public administration. In common with the two books from the previous Public Law Conferences, this collection offers authoritative insights into the most important issues emerging in public law, and is essential reading for those working in the field.