Per Faxneld is a research fellow at the department of the History of Religions at Stockholm University, Sweden. He has written several peer-reviewed articles and book chapters on Satanism and Western Esotericism, co-edited Förborgade Tecken ("Hidden Signs" H:Ströms, 2010) - a book on Esotericism in literature - and is the author of Mörkrets apostlar ("Apostles of Darkness", Ouroboros, 2006), a study of early Satanism. His research focuses on gender issues in Satanism, and the literary roots of contemporary religious constructions of the Devil as a hero and helper.
Jesper Aagaard Petersen is associate professor at the Programme for Teacher Education, Norwegian University of Science and Technology (NTNU). He has published extensively on modern Satanism, is the editor of Contemporary Religious Satanism: A Critical Anthology (Ashgate, 2009) and the co-editor of Controversial New Religions (Oxford, 2005) and The Encyclopedic Sourcebook of Satanism (Prometheus, 2008). He has a Ph.D. from the Department of Archaeology and Religious Studies at NTNU with the thesis Between Darwin and the Devil: Modern Satanism as Discourse, Milieu, and Self (2011).