Mercedes Garc�a-Arenal is a research professor at the Higher Council of Scientific Research in Madrid. Gerard Wiegers is a professor of comparative religion and Islamic studies in the Department of Comparative Religious Studies at the University of Nijmegen. Translator Martin Beagles teaches in the Department of Modern Languages at the Universidad Complutense de Madrid.
Richard L. Kagan is a professor of history at the Johns Hopkins University. He is the editor, with Philip D. Morgan, of Atlantic Diasporas: Jews, Conversos, and Crypto-Jews in the Age of Mercantilism, 1500ndash;1800, and the translator and editor, with Abigail Dyer, of Inquisitorial Inquiries: Brief Lives of Secret Jews and Other Heretics, both published by Johns Hopkins.