In a thriller variation on the old feral-child premise, young Hanna (Saoirse Ronan of Atonement) has been raised in the snows of Finland and mercilessly drilled in survival tactics by her father (Eric Bana), a rogue CIA agent. Her mother was executed years earlier by a ruthless Agency bigwig (Cate Blanchett), who now needs to destroy Hanna and whose emotional deficit is communicated through the established movie shorthand of a big shoe collection. When Hanna decides she’s ready for the chase, she hits a button on a transmitter that broadcasts her and her father’s whereabouts to the world; because they have nothing to gain from this, logic would dictate that they just stay put, but then the movie couldn’t turn into a live-action video game with a preteen piling up bodies like Rambo. As Kick-Ass proved, there’s a ready audience for the spectacle of a school-age girl who’s a relentless killing (as opposed to texting) machine. Joe Wright directed, and the Chemical Brothers contributed the sizzling electronica score.