Book excerpt: Mental health law is a rapidly evolving area of practice and research, with growing global dimensions. This work reflects the increasing importance of this field, critically discussing key issues of controversy and debate, and providing up-to-date analysis of cutting-edge developments in Africa, Asia, Europe, the Americas, and Australia. This is a timely moment for this book to appear. The United Nations’ Convention on the Rights of Persons with Disabilities (2006) sought to transform the landscape in which mental health law is developed and implemented. This Convention, along with other developments, has, to varying degrees, informed sweeping legislative reforms in many countries around the world. These and other developments are discussed here. Contributors come from a wide range of countries and a variety of academic backgrounds including ethics, law, philosophy, psychiatry, and psychology. Some contributions are also informed by lived experience, whether in person or as family members. The result is a rich, polyphonic, and sometimes discordant account of what mental health law is and what it might be. The Handbook is aimed at mental health scholars and practitioners as well as students of law, human rights, disability studies, and psychiatry, and campaigners and law- and policy-makers.