A biblical scholar makes a startling discovery beneath the Vatican, one with vast ecclesiastical and medical implications. When the Bishop of the Archdiocese of New York hears about it, he turns to an old friend, physician Jack Stapleton, to protect a secret with the power to change lives forever. In this medical thriller, DNA science, biotechnology, and religion collide. Ninth in the series. "Provocative [and] inventive."—Booklist