"There is one pivotal scene where Matt's and Scarlett's characters get in a fight. On the day of the scene, we realized it had some dialogue that wasn't in the tone of the rest of the movie. We all kind of stopped and went, Oh... But Matt and Scarlett tore into the scene, and we figured it out. They're very spontaneous and smart. This scene in particular was an explosion of collaboration—I was really happy with it."