explores how Jews and Muslims are stigmatized and endangered by the same conspiratorial template. Supremacists imagine that Jews and Muslims secretly strive to replace white, European civilization with an unspeakable tyranny. The authors, a Jew and a Muslim, analyze the nature of the conspiracism that targets their communities. They historicize the supremacist conspiratorial imagination, narrating the paranoia on a continuum, from modernity to the postmodern. They begin with the texts of modernity, following them through to the dark areas of the Internet and examining their violent denouement in synagogues and mosques. The book investigates the classic text and neoclassic variations such as QAnon. It turns to Islamophobic responses to 9/11 such as paranoia regarding the Muslim Brotherhood and the doppelgänger of , namely . The authors conclude by questioning how "ordinary" people, prompted by paranoia and recognition hunger, resort to violence and murder. Admittedly, the authors are not certain-certainty is for conspiracists. But they may have a piece of the puzzle. This book will be of interest to students and scholars of conspiracy theories, antisemitism, Judeophobia, Islamophobia, political science, history, philosophy, psychology, sociology, and criminology.