The present work analyzes the novel Aguas Turbias, by Costa Rican writer Fabián Dobles, from a socio-historic perspective. The contextual analysis of 1930- and 1940-Costa Rica, as well as an approach to the text from the perspective of subjectivity construction of the most important characters, Juan Ramón López, Ninfa Ledezma y Lencho Ledezma.presented here.