Working from church documents, Kenneth Woodward shows how saint-makers decide who is worthy of the church's highest honor. He describes the investigations into lives of candidates, explains how claims for miracles are approved or rejected, and reveals the role politics -- papal and secular -- plays in the ultimate decision. From his examination of such controversial candidates as Archbishop Oscar Romero of El Salvador and Edith Stein, a Jewish philosopher who became a nun and was gassed at Auschwitz, to his insights into the changes Pope John Paul II has instituted, Woodward opens the door on a 2,000-year-old tradition.