One Chicago fans, get ready for another major shake-up—Kara Killmer is officially leaving Chicago Fire after Season 12. This means Firehouse 51’s Ambulance 61 will be losing yet another key paramedic.
Killmer, who has played Sylvie Brett since Season 3, will return for the upcoming season, but her final episode has yet to be revealed. Her exit marks a significant shift for the show, as she has been a core character for nearly a decade, appearing in 193 episodes of Chicago Fire and making crossover appearances on Chicago Med and Chicago P.D..
Kara Killmer’s Journey as Sylvie Brett
Killmer joined the series in 2014, stepping in to fill the void left by Leslie Shay’s tragic death. Over the years, Brett has formed strong partnerships on Ambulance 61, working alongside characters like Gabby Dawson, Peter Mills, and Violet Mikami. She eventually rose to Paramedic in Charge, becoming an essential member of Firehouse 51.
Beyond her career as a paramedic, Brett’s love life has been a central focus. Her relationship with Matt Casey (Jesse Spencer) has been a fan-favorite storyline, especially with Casey’s surprise proposal in the Season 11 finale. However, before Brett could give her answer, the screen cut to black—leaving fans with a major cliffhanger.
With Killmer’s departure confirmed, fans are left wondering: Will Brett and Casey get their happily ever after, or will her exit mean heartbreak?
More Changes Ahead for Chicago Fire
Killmer’s departure isn’t the only big change happening in Chicago Fire Season 12.
🔥 Taylor Kinney’s Return: After stepping away in January 2023 for personal reasons, Kinney is set to return as Kelly Severide, at least for the start of the season.
🔥 Behind-the-Scenes Shake-Up: Co-showrunner Andrea Newman will be taking full creative control, following Derek Haas’ exit in November 2022.
🔥 Shortened Season: Due to the WGA and SAG-AFTRA strikes, Chicago Fire Season 12 will have a shorter 13-episode run, rather than the usual 20+ episodes.
🔥 More #OneChicago Exits: Killmer isn’t the only one saying goodbye. Tracy Spiridakos, who plays Hailey Upton on Chicago P.D., is also leaving after Season 11.
What’s Next for Firehouse 51?
With Sylvie Brett leaving, Chicago Fire will need to find a new lead paramedic. Could Violet Mikami step up? Or will we see a brand-new character join Ambulance 61?
As for Brett and Casey, will they ride off into the sunset together? Or will Brett’s departure bring another heartbreaking farewell to Firehouse 51?
With Season 12 set to premiere in early 2024, fans will soon get their answers. One thing is for sure—big changes are coming to Chicago Fire.
