From the novel's opening chapters the reader is ushered into a shadowy world in which crime and religion are mingled. In the church of Santa Maria del Pianto in Naples, Ellena Rosalba and Vincentio di Vivaldi first meet; but their love is ill-omened. Leagued against them are the proud and ambitious Marchese di Vivaldi and her confessor Father Schedoni. When Ellena vanishes on the death of her guardian, Vivaldi sets out in pursuit of her across the mountainous regions of southern Italy before himself falling prey to the Holy Inquisition.
