9/11 and its aftermath demonstrate the urgent need for political scientists and historians to unravel the tangled relationship of secular ideologies and organized religions to political fanaticism. This major new volume uses a series of case studies by world experts to further our understanding of these complex issues. They examine the connections between fascism, political religion and totalitarianism by exploring two inter-war fascist regimes, two abortive European movements, and two post-war American extreme right-wing movements with contrasting religious components. A highlight of this collection is a fresh article from Emilio Gentile, recently awarded an international prize for his contributions to our appreciation of the central role played by political religion in the modern age. This is preceded by an editorial essay by Roger Griffin, one of fascist studies' most original thinkers. Alongside these contributions the reader is presented with a wealth of work that redefines the complex concept of 'totalitarian movement' and our understanding of generic Fascism. Taken as a whole, it comprehensively analyses the links between particular totalitarian movements and regimes and the concrete historical phenomena produced in the light of current, radical theories of fascism, totalitarianism and political religion. This book will be of great interest to all students and scholars of international relations, politics and contemporary history. This volume was previously published as a special issue of the journal Totalitarian Movements and Political Religions.