Norman L. Geisler is author or coauthor of some sixty books, including The Baker Encyclopedia of Christian Apologetics and his four-volume Systematic Theology. He has taught at the university and graduate level for nearly forty years and has spoken or debated in all fifty states and in twenty-five countries. He holds a Ph.D. in philosophy from Loyola University and now serves as president of Southern Evangelical Seminary.
Chad V. Meister is director of philosophy at Bethel College in Indiana. He formerly headed up the Defenders Ministry at Willow Creek Community Church.
Louis Markos (PhD, University of Michigan) is professor of English and Honors, and Scholar-in-Residence at Houston Baptist University, where he holds the Robert H. Ray Chair in Humanities. His publications include Apologetics for the 21st Century, From Achilles to Christ: Why Christians Should Read the Pagan Classics, and Restoring Beauty: The Good, the True, and the Beautiful in the Writings of C. S. Lewis.
Scott Klusendorf is the president of Life Training Institute, where he trains pro-life advocates to persuasively defend their views. A passionate and engaging platform speaker, Scott's pro-life presentations have been featured by Focus on the Family, Truths That Transform, and American Family Radio. Scott is a graduate of UCLA and the author of Pro-Life 101.