Franklin College in Franklin, Indiana, has been David's home for the past forty-three years. David has been particularly attracted to the topics of faith development, Catholic-Orthodox relations, and Christian-Muslim dialogue. In 2007, he conducted interviews across the country in monasteries and convents about monastic responses to 9/11. The book based on that experience, Peace Be with You: Monastic Wisdom for a Terror-Filled World, was chosen as one of the Best Books of 2011 by Library Journal. In the past sixteen years, religious terrorism has become an area of specialty. Much of his time in the last ten years has been spent giving talks as well as radio and television interviews on ISIS, Al-Qaeda, and other terrorist organizations. Now retired, David enjoys writing both non-fiction related to interfaith relations and the award-winning Christopher Worthy/Father Fortis Mystery series. His wife, Kathy, is a retired English professor, an award-winning artist, and his best editor. Their two sons took parental advice to follow their passions. The older, Leif, is a Fine Arts professor and photographer, and the younger, Marten, is a filmmaker.