In 1960, José del Carmen Valenzuela Torres, from the small town of Nahueltoro in Chile, brutally murdered Rosa Rivas Acuña and her five children. This classic film of the Latin American cinema is based on testimonies provided by the murderer himself while he was being prosecuted and the journalists who interviewed him before his sentence was executed. Thirty two months after the massacre at age 23 and after learning how to read and write, "The Jackal of Nahueltoro" faced a firing squad.