“Four Daughters,” an Oscar®-nominated tour de force by Kaouther Ben Hania (The Man Who Sold His Skin) uses an audacious formal conceit to tell the story of Olfa Hamrouni and her four daughters. Attempting to answer the question of how and why the Tunisian woman’s two eldest were radicalized, Ben Hania reveals a complex history. We watch as the family relives key events in their lives with help from professional actors standing in for the missing girls.