Katherine L. Jansen teaches history at the Catholic University of America in Washington, D.C. A specialist in Mary Magdalene, her publications include The Making of the Magdalen: Preaching and Popular Devotion in the Late Middle Ages (Princeton University Press, 2001).

Deirdre Good teaches at General Theological Seminary of the Episcopal Church in New York. She has written about early writing outside the accepted body of Christian texts. She writes and lectures widely on the role of women in historical Christianity and in the present.

Anne McGuire teaches religion at Haverford College. She specializes in research on the Nag Hammadi ancient Christian texts and has taught courses on gnosticism, women in early Christianity and Mary Magdalene.

James H. Charlesworth is a professor of New Testament language and literature at Princeton Theological Seminary. He has written extensively about early Christian texts. Charlesworth is also the editor of an important volume of essays by a range of biblical scholars called Jesus and Archaeology.

N.T. Wright is a leading New Testament scholar and retired Anglican bishop. He is currently a professor of New Testament and early Christianity at the University of St. Andrews in Scotland.

Robin Griffith-Jones is the author of The Da Vinci Code and the Secrets of the Temple (Canterbury Press, 2006), a New Testament scholar and Master of the Temple Church, the medieval headquarters of the Knights of the Templar. He gives Da Vinci Code-based tours of the church.

The Studio City, California, consulting firm Grace Hill Media was founded by Jonathan Bock to bridge the gap between Hollywood and religion that causes so many debates. Grace Hill Media worked on the Lord of the Rings and The Chronicles of Narnia movies and The Da Vinci Code’s official website, among other projects.

Barbara Nicolosi is an American screenwriter and founder/executive director of Act One, a firm that works with Christians in Hollywood.

Peter Jones, adjunct professor of New Testament at Westminster Theological Seminary in Escondido, California, is co-author of Cracking DaVinci’s Code and author of Stolen Identity: The Conspiracy to Reinvent Jesus.