Why Is Sylvie Brett Leaving Chicago Fire? Kara Killmer’s Exit Explained

Kara Killmer, who plays Sylvie Brett, will exit Chicago Fire in season 12. Killmer’s final episode as Brett will feature her wedding with Matt Casey and eventual move to Oregon. While the exact reason behind Killmer’s departure remains undisclosed, her decision to leave after nine seasons is bittersweet.

Chicago Fire has experienced its fair share of cast exits over the years, and another actress is scheduled to leave the show during season 12 — Kara Killmer, who has played Sylvie Brett since the season 3 premiere. Brett, a paramedic, was introduced following the exit of Lauren German’s Leslie Shay, who died when Firehouse 51 responded to a building fire during the season 2 finale, and an explosion resulted in a falling pipe that fatally struck Shay. At first, the firehouse resented Brett’s arrival because she was essentially replacing Shay, but over time, Brett integrated herself into the found family.