Mr. José, a fifty-year-old employee in the Civil Registry's public archives, lives a monotonous life revolving around files, names, and documents, until he stumbles upon an identity card belonging to an unknown woman. This simple discovery transforms into an obsession that drives him to search for her, even though he doesn't know her or why he's so captivated by her fate. He leaves the closed world of the archives and ventures into the outside world, tracing the woman's footsteps through records, schools, and places connected to her life. The adventure becomes a journey to discover the meaning of existence, death, and memory. For Saramago, the names stored in files become more than mere data; they are traces of people who lived and then disappeared, while the boundaries between the living and the dead are less clear than we imagine. The novel reflects on the value of a human being when they are reduced to a number or a document, and on humanity's need to be remembered. Saramago grants his ordinary employee an extraordinary experience that breaks the monotony of his life and compels him to confront his fears and his thirst for knowledge. The narrative blends philosophy, irony, and existential questions, and the journey to find an unknown woman transforms into a deep reflection on identity, time, loss, and what remains of a person after their absence.