There’s a new feral teen psychopath on the silver screen, and her name is Hanna. Played in an extraordinary performance by the remarkable Saorise Ronan, Hanna is the best action thriller put to screen so far this year. Calling Hanna a psychopath might be a little harsh. Raised by her former CIA daddy (Eric Bana) in the frozen tundra and taught to kick ass with the might of 10 men, she’s only doing what she was told to do. And when she gets old enough, she sets out on a journey to take out another CIA agent (the deliciously repellent Cate Blanchett). The film, directed by Joe Wright, is a long way from the relative comfort and serene drama of his Atonement, which also starred Ronan, and Pride & Prejudice. He shows that he knows his way around a good fight scene, of which the film has plenty. Three cheers for Ronan, who has major chops as an action star.