The Great Schism divided Western Christianity between 1378 and 1417. Two popes and their courts occupied the see of St. Peter, one in Rome, and one in Avignon. Traditionally, this event has received attention from scholars of institutional history. In this book, by contrast, Joëlle Rollo-Koster investigates the event through the prism of social drama. Marshalling liturgical, cultural, artistic, literary and archival evidence, she explores the four phases of the Schism: the breach after the 1378 election, the subsequent division of the Church, redressive actions, and reintegration of the papacy in a single pope. Investigating how popes legitimized their respective positions and the reception of these efforts, Rollo-Koster shows how the Schism influenced political thought, how unity was achieved, and how the two capitals, Rome and Avignon, responded to events. Rollo-Koster's approach humanizes the Schism, enabling us to understand the event as it was experienced by contemporaries.