Like the McCarthy era of the 1950s, there is a strong current of paranoid social thought at the end of the 20th century. Conspiracy theories abound, not only in extremist ideologies and groups, but in commerce, science, and economics-arenas where a paranoid style is least expected. A curiosity about paranoia at its most reasonable is at the root of this volume. Some pieces develop conversations that reveal the post-Cold War situations of countries such as Italy, Russia, Slovenia, and the United States where conspiratorial explanations of national dramas seem to make sense. Other pieces tackle paranoia as a style of debate in such diverse realms as science, psychotherapy, and popular entertainment, where conspiracy theories emerge as a compelling way to address the inadequacies of rational expertise and organization in the face of immense changes that undermine them.