In the years since Doomsday Cult was first published, much has happened to the movement. This enlarged edition brings us up to the present. Doomsday Cult analyzes the first five years in America (1959-1964) of an obscure end-of-the-world religion that went on to become nationally and internationally famous in the 1970s. The movement went from identification as a small and laughable bunch of kooks to public definition as a powerful and nefarious social force that had to be countered. Such a truly dramatic change in the status of a movement (and the activities of the movement itself) demands the question: Why and how did it happen? The change provides an important opportunity, moreover, to increase our understanding of the dynamics of social movements more generally: their resource mobilization, internal organization, strategies, citizen responses to them and the like. These topics are discussed in the Epilogue to the Enlarged Edition, added since the original edition was published. - Preface to the enlarged edition.