“Hanna”, starring Eric Bana, Cate Blanchett and Saoirse Ronan as the title character, is a film about a sixteen year old girl, hidden away in the forest by her father, who has been training her to be the perfect assassin her whole life, not so that she will kill for money but to prepare her for the life she will have once she chooses to be a part of society and face the ruthless intelligence agent who is trying to hunt them down.