The author is a retired physician and teacher. He has been a faculty member at several medical schools and is presently editor of a medical journal. He has written many scientific articles about cancer but The Third Apostle is his first work of fiction. He has doctoral degrees in medicine and biochemistry from the University of Louisville and the University of Minnesota and has, for many years, had an interest in the early history of Christianity. The Third Apostle is fiction with no basis in fact. Dr. Yarbro lives in Sandestin, Florida where he spends his time with medical editing, reading, and golf.