M. T. Oates is a writer and communications consultant. Her writings have appeared in numerous publications including The Boston Globe, Chicago Tribune, The New York Times, and The Washington Times. She lives in New York City. Linda Ruf is a certified public accountant and an authority on The Da Vinci Code as it relates to the teachings of the Catholic Church and Opus Dei. She lives in Washington, DC. Jenny Driver, MD, is a staff physician at Beth Israel Deaconess Medical Center and an instructor of medicine at Harvard Medical School. She lives in Providence, Rhode Island.