Ex-Navy SEAL Nolan Kilkenny returns in an adventure that races from the grandeur of the Vatican across the vastness of Asia, ultimately involving China, the Mafia, and the conclave of cardinals that will elect the next pope. When Kilkenny is invited to Rome to consult on the functioning of the Vatican Library, he is still grieving the death of his wife and son and welcomes the distraction of the seemingly simple assignment. But Pope Leo XIV has a startlingly different task in mind for him.