THE MAURITANIAN is a drama about a terrorist case. In November 2001, Mohamedou Slahi, a former al-Qaeda member, enjoys a relative’s wedding in Mauritania, in the northwestern part of Africa. Government officials ask Slahi to submit to questions about al-Qaeda and its September 11 attack on America. They and the FBI question Slahi for seven days. Then, he’s unexpectedly imprisoned in Jordan, then Guantanamo Bay for more questions. Eventually, an American lawyer takes Slahi’s case. However, it takes years to find any proof supporting Slahi’s claims he was beaten and sexually abused to elicit a fake confession.