A dying priest is dispatched by the Vatican to a remote Italian village to investigate the potential sainthood of a man whose life is shrouded in mystery and local legend. Father Blaise Meredith, facing his own mortality, must navigate a complex social landscape where the truth about Giacomo Nerone is obscured by the conflicting testimonies of villagers, former lovers, and political enemies. As he probes the past, Meredith finds his own faith challenged by the moral ambiguities of the people he encounters. The narrative unfolds through a measured, introspective lens, focusing on the tension between institutional bureaucracy and the raw, human experience of sanctity.

This novel is widely regarded as a significant work of mid-twentieth-century religious fiction that avoids simplistic moralizing. Critics often highlight the author's ability to balance the procedural elements of a Vatican investigation with a profound meditation on the human condition. The narrative is frequently praised for its nuanced portrayal of a protagonist who finds his own spiritual convictions transformed by the investigation. Readers typically identify the book's strength in its refusal to provide easy answers regarding the nature of holiness and the complexities of faith.