The film will be an amalgamation of the famed diary; the stage adaptation by Albert Hackett and Frances Goodrich; and Mamet's own original take on the material that could reframe the story as a young girl's right of passage. Frank, who died at 15 in the Bergen-Belsen concentration camp, became an icon of the Holocaust after the post-war publication of the diary that she kept during the two years that her family hid in a secret attic apartment in Amsterdam.