Brandon Toropov is a Boston-based writer who has written a variety of non-fiction titles including The I Ching for Beginners and The Art and Skill of Dealing with People. He has appeared on more than 100 local and national broadcast programs. He is the author of several Complete Idiot's Guides on religious topics.

Father Luke Buckles is the vice chancellor of the Dominican School of Philosophy and Theology, Graduate Theological Union, in Berkeley, California. He has a Doctorate in sacred theology from the University of St. Thomas Aquinas in Rome.