Dr. Jerry L. Walls is a Scholar in Residence and Professor of Philosophy at Houston Baptist University. His primary focus is on philosophy of religion, ethics and Christian apologetics. He has authored, co-authored, edited or co-edited more than a dozen books and over eighty articles and reviews. Among these is an influential trilogy on the afterlife, namely: Hell: The Logic of Damnation; Heaven: The Logic of Eternal Joy; Purgatory: The Logic of Total Transformation. Click here to learn more about Dr. Walls.