In fall 2009, movie producer Nina Jacobson was faced with a classic Hollywood dilemma -- to pitch or not to pitch. Jacobson's colleague, Bryan Unkeless, had recently recommended a young adult novel he thought would make a good movie. Jacobson told The Huffington Post that she loved the book and "couldn't put it down, couldn't stop thinking about it." She said that although she knew the movie would be expensive to make, it would be difficult to sell to the studios for another reason -- it was an action movie starring a female protagonist. "She's 16-years-old in the book, and she's not defined by her romantic interest -- it's not a love story, though there is a romantic subplot.