With Eric Bana, Cate Blanchett and Saoirse Ronan as stars, what could go wrong?

The Hollywood Reporter (via Heat Vision) says Saoirse Ronan is in talks to take on the title role in Hanna for director Joe Wright. The script is about an Eastern European teenager who has been trained by her father to be a cold-blooded killing machine. She spends some time with a French family living the life of a typical teen, but is soon forced back into the dangerous world of her father and is forced to fight her way back to freedom.