The other half of Brettsey is leaving the Windy City. The upcoming 12th season

of “Chicago Fire” will be the last for Kara Killmer, who stars as Sylvie Brett. While Killmer

will be in the first part of the season, it has not yet been determined how many

episodes she will appear in. Killmer joined the NBC procedural in Season 3 in 2014, and has appeared in 193 episodes. She has also had recurring roles on spinoffs “Chicago Med” and “Chicago P.D.” All three shows are produced by Wolf Entertainment and Universal Television, a division of Universal Studio Group. As Variety previously reported, Kinney will be returning during Season 12 after missing the last eight episodes of Season 11. Behind the scenes, Andrea Newman, who previously ran the writers’ room with series co-creator Derek Haas, will be the solo showrunner.

Elsewhere in the One Chicago world, Tracy Spiridakos, who portrays Hailey Upton, will be exiting “Chicago P.D.” after the upcoming 11th season, following in the footsteps of her on-screen husband. Jesse Lee Soffer, who played Upton’s husband, Jay Halstead, exited in Season 10. It has not yet been revealed how many episodes she will appear in.