Maggie Q only acts on stage.
Margaret Denise Quigley ( born May 22 , 1979 ) , professionally known as Maggie Q , is an American actress and model . She is known for starring in the action films Mission : Impossible III and Live Free or Die Hard and played the title role of The CW 's action-thriller series Nikita , airing from 2010 to 2013 . In 2014 , she portrayed Tori Wu in the film adaptation of Veronica Roth 's novel Divergent , a role she reprised in its sequels , Insurgent and Allegiant . She currently stars in the role of Agent Hannah Wells in the ABC political drama Designated Survivor .