When the prominent Buongianni Corsi is discovered dead in a palazzo courtyard, Marshal Guarnaccia must navigate a web of aristocratic influence to determine if the death was truly an accident. The Marshal faces intense pressure from the powerful Marchesa to accept the official narrative of a tragic mishap, yet his own intuition suggests a more calculated crime. As he investigates the labyrinthine corridors of the Palazzo Ulderighi, he struggles against the weight of social hierarchy and the potential loss of his career. The narrative follows Guarnaccia’s methodical, internal process as he balances his professional duty against the formidable resistance of the city's elite.

This work is characterized by its quiet, atmospheric approach to the police procedural genre, favoring character study over high-octane action. The narrative style suggests a focus on the claustrophobic nature of the setting, where the physical architecture of the palazzo mirrors the complex social barriers Guarnaccia must overcome. Readers likely appreciate the grounded, realistic portrayal of a detective operating within a rigid class structure. The story emphasizes the moral integrity of the protagonist as he navigates the subtle, sinister undercurrents of an aristocratic household.