Despite Robert E. Park’s prominence in American sociology, his early writings (before 1913) have been neglected. This article argues that Park’s early writings illustrate an important transitional phase in twentieth-century sociological thought. As sociology moved out of German romantic philosophy and toward rationalism and positivism, it had to come to terms with the existence of evil in the world. Park’s essays on the Congo formulated a more complex perspective on modernity’s modes of evil. Along with the Congo essays, Park’s Black Belt studies form a comprehensive portrait of the double-sided moral character and socioeconomic effects of the Reformation. Park’s early writings adumbrate a Gothic sociology of horror, in which the civilizational process erodes the many folk cultures that it draws into its basic forms—civil society and urban life.