genre mashing movie, sort of. The movie shifts gears pretty hard at one point, but never completely leaves behind it's original elements. In the second act Joseph Gordon-Levitt's character runs smack into Emily Blunt's character and her son, and the rest of the film focuses on the three of them.
The kid: Pierce Gagnon's performance stands out in a cast of seasoned actors. He's not just a precocious kid, he gives his character emotional depth that is compelling in every scene. There is no doubt that he will continue to have a career as long as he chooses to pursue it.
Bonus kid actor mention: Joseph Gordon-Levitt started acting when he was seven and hasn't slowed down since.