St. Luke addressed his Gospel and the Acts of the Apostles to a man named Theophilos. Who was Theophilos? Scripture scholars do not know, making him a fit subject for Michael O'Brien's vivid imagination. In this fictional narrative, Theophilos is the skeptical but beloved adoptive father of St. Luke. Challenged by the startling account of the "Christos" received in the chronicle from his beloved son Luke and concerned for the newly zealous...