Jerry L. Walls (PhD, University of Notre Dame), a world-class expert on the afterlife and a sought-after speaker, has written for "Christianity Today", "First Things", and "Christian Century". He has appeared on NPR's "Talk of the Nation" and in the documentary film "Hellbound". Walls, professor of philosophy and scholar in residence at Houston Baptist University in Houston, Texas, is the coauthor of "Why I Am Not a Calvinist "and the "Christianity Today "Book Award Winner "Good God: The Theistic Foundations of Morality". He has authored or edited a dozen books, including a trilogy on the afterlife--"Hell: The Logic of Damnation", "Purgatory: The Logic of Total Transformation", and" Heaven: The Logic of Eternal Joy"--and is a senior speaking fellow for the Morris Institute for Human Values.