The Power of Darkness (Spanish: El poder de las tinieblas) is a 1979 Argentine mystery-horror thriller film written and directed by Mario Sábato and starring Sergio Renán.

It is based on the chapter named Informe sobre ciegos ("Report on the Blind"), from the novel On Heroes and Tombs, written by the father of the director, Ernesto Sábato.

[2] The film can be read as a clear metaphor for the State terrorism and violence produced by the military dictatorship that ruled Argentina at the time, the self-titled "National Reorganization Process" (1976–1983).

A man (Renán) has discovered a global conspiracy made by blind people, but can not prove or convince others.

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