Professor Alexandra Cuffel received her PhD in History from New York University and is currently Professor of Jewish Religion at the Center for Religious Studies and the History Department at Ruhr Universität Bochum, Germany. Her research addresses Jewish-Christian-Muslim relations, especially polemic, in medieval Europe and the Middle East, gender and mysticism in medieval and early modern Judaism, and shared religious practices, on which she has published numerous articles. She is also the author of Gendering Disgust in Medieval Religious Polemic (2007).Professor Nikolas Jaspert received his PhD in History from the Friedrich-Meinecke-Institut der Freien Universität Berlin, and is currently Professor of Medieval History at the University of Heidelberg. His research focuses on the history of the Mediterranean, especially the Iberian Peninsula during the Middle Ages, the crusades, military orders, and medieval German-Iberian relations. He is the author of numerous articles and edited volumes dealing with various aspects of these topics, and the monograph Die Kreuzzüge, first published in 2003 and translated into English in 2006.