1304. Pope Benedict XI, standing in the way of God's viceroy on earth, Philip IV the Fair, is about to be poisoned! Meanwhile, in the possessions of the young widow Agnès de Suarsi, the bodies of monks burned and torn to pieces by hellfire are found. Her half-brother Ed, whose sinful passion she rejected, gave her into the hands of a sadistic inquisitor, but for Ed her flesh was too desirable to send her to the stake! Someone more powerful—the man who betrayed the Pope—doomed her to destruction. Will Agnes' guardian angel be able to snatch her from the clutches of death?