Sophia Bush on 'Chicago P.D.' Season Two, and How She Broke a Stunt Guy's Nose

"Chicago P.D." star Sophia Bush stopped by Universal Studios Hollywood to chat with "Extra" host Mario Lopez about the upcoming second season of her show.

Sophia also talked about whether her character Erin will continue her romantic relationship with "Chicago Fire's" Kelly, played by Taylor Kinney (the two shows cross over), and told the story of how she ended up breaking a stunt guy's nose last season on the show.