The investigation into how a comatose woman ended up in a river near the mayor’s home reveals the victim’s unexpected wild side.

Severide is hiding a serious shoulder injury sustained in the fire that killed Andy Darden, and grapples with his guilt as he fights to rescue a construction worker trapped in…

Brian’s loyalty to the FBI is tested when Sands, Senator Edward Morra’s representative, demands he steals the FBI’s secret files on NZT. Also, Agent Harris is emotionally conflicted when she…