From 'La Femme Nikita' and 'The Professional' to 'The Fifth Element', writer/director Luc Besson has created some of the toughest, most memorable female action heroes in cinematic history. Now, Besson directs Scarlett Johansson in "Lucy", an action-thriller that tracks a woman accidentally caught in a dark deal who turns the tables on her captors and transforms into a merciless warrior evolved beyond human logic.