Book excerpt: This volume explores the influence of professional service firms on public policy-making from a global perspective. Drawing on cases studies from around the world, researchers from different disciplines—including sociology, political science, geography, anthropology, history, and management studies—examine how professional service firms have generated power in the policy-making process. The chapters further investigate the structure and organization of these firms and their relationship with public agencies. They discuss the impact of strategies, techniques and models promoted by these firms on political decision-making. And they analyze how these firms have contributed to the formation of global policy-pipelines, facilitating the quick diffusion of policy ideas across time and space. Exposing how professional advisors can undermine democratic decision-making, the chapters in this book explore the potential for resistance and regulation of public-private relationships.