The purpose of this work is to analyse Domingos Pellegrini's novel O caso da chácara Chão, looking at the space constructed by the movement of the characters, the language and the descriptions of the environment as elements that shape the work, emphasising the exterior space as a decisive aspect for the constitution of the characters and the action. This study shows how the author uses the relationship between the characters and the space to construct their identity and the action in the narrative. The intention is also to bring author and work closer together by analysing the references found in the text that reveal the relationship between the two. This is achieved by making comparisons between the experiences lived by the writer and those described by Manfredini, the narrator-character. Another aspect is to situate the work in the detective novel genre, from the point of view of critics and theorists who have dealt with this genre.