This "profound and disturbing" (New York Times Book Review) bestseller written by a Guantánamo prisoner will soon be a major feature film starring Jodie Foster and Tahar Rahim. When The Mauritanian was first published as Guantánamo Diary in 2015--heavily redacted by the U.S. government--Mohamedou Ould Slahi was still imprisoned at the detainee camp in Guantánamo Bay, Cuba, despite a federal court ruling ordering his release, and it was unclear when or if he would ever see freedom. In October 2016 he was finally released and reunited with his family. During his fourteen-year imprisonment the United States never charged him with a crime. Now he is able to tell his story in full, with previously censored material restored. This searing diary is not merely a vivid record of a miscarriage of justice, but a deeply personal memoir--terrifying, darkly humorous, and surprisingly gracious. The Mauritanian is a document of immense emotional power and historical importance.