Watch Online Free on Watchseries. Documentary about the personal story of Valentín Enseñat and the search for his father, Miguel Ángel Río Casas, who disappeared in 1977 during Uruguay's civil-military dictatorship (1973-1985). Río Casas was in the clandestine detention center known as “Pozo de Quilmes”, run by the Argentine dictatorship (1976-1983).