Papal secretary Father Colin Michener is concerned for the Pope. Night after restless night, something coaxes Pope Clement XV to the Vatican's private archive something concerning the revelations of Fatima. When the Pope sends Michener on a mysterious errand to the Romanian highlands, perilous events unfold and Michener finds himself embroiled in suspicion, deceit, suicide, and murder. Suddenly he is forced to face the very thing that has so distressed the Pope and must unravel a mystery that will shake the world.