"This handbook is an essential resource for researchers. Its broadly accessible, insightful essays cover a range of topics from different disciplines and about different nations, and it demonstrates the importance of conspiracy theories in contemporary politics and society." — Mark Fenster, Levin College of Law at University of Florida, USA"This wide-ranging collection brings together many different strands of scholarship on conspiracy theories. Sociologists, political theorists, historians, psychologists, and philosophers provide new and compelling ways to examine who believes in these theories, why they believe them, and what we can do about them. An essential exploration of one of the defining features of our age." — Kathryn Olmsted, University of California, USA