A seemingly simple robbery conceals a deadly political past that threatens to consume a reclusive detective. Private investigator Heredia, content with his quiet life of reading and observing the Mapocho River, is drawn into a dangerous investigation when Virginia Reyes seeks his help. Her brother's death, ruled a robbery, lacks any stolen valuables, hinting at a deeper, more sinister motive. Heredia must navigate a city still shadowed by the Pinochet regime, where secrets are lethal and trust is a luxury he cannot afford, all while suspecting Virginia is withholding crucial information.

The premise sets up a classic noir-style mystery interwoven with the complex political history of Chile under Pinochet. The narrative appears to focus on Heredia's methodical investigation, contrasting his quiet life with the dangerous realities he uncovers. The inclusion of political undertones suggests a story that explores themes of justice, memory, and the lasting impact of authoritarian regimes. Readers can expect a tense atmosphere and a plot driven by hidden truths and the protagonist's struggle to survive.