Based on true events, Official Secrets tells the gripping story of Katharine Gun, a British intelligence specialist whose job involves classified information. One day in 2003, in the lead up to the Iraq War, Gun receives a memo from the NSA with a shocking directive: the U.S. wants Britain’s help in collecting compromising information on U.N. Security Council members in order to blackmail them into voting in favor of the invasion of Iraq. Aghast, Gun makes the gut-wrenching decision to defy her government and leak the memo.