Here's how to watch 'Chicago Fire' online, from the early Casey and Severide years under Boden through Kidd's introduction to ...

NBC has unveiled the official first looks at Chicago Med, Chicago Fire and Chicago P.D. as they all return for new seasons on ...

Bobby Nash (Peter Krause), and a new image from the upcoming season confirms that it won't make the same mistake that Chicago ...

Chicago Fire began with Gabriela Dawson (Monica Raymund) having an unrequited longtime crush on Casey, which eventually led to their wedding during the show's 100th episode in season 5.