"CITIZENFOUR is a real life thriller, unfolding by the minute, giving audiences unprecedented access to filmmaker Laura Poitras and journalist Glenn Greenwald’s encounters with Edward Snowden in Hong Kong, as he hands over classified documents providing evidence of mass indiscriminate and illegal invasions of privacy by the National Security Agency (NSA).

Poitras had already been working on a film about surveillance for two years when Snowden contacted her, using the name “CITIZENFOUR,” in January 2013."