Though nothing has been officially revealed, "Chicago Fire" showrunner Derek Haas told TV Line that at least one old character from the show will be reappearing on the show during its 10th season. "There will be an old character coming back in the second episode and going forward. It's such a good, emotional surprise," Haas told TV Line. According to One Chicago Center, the first episode of the 10th season of the show, which premiered back in September, was supposedly setting up the return of Kelly Severide's mother, Jennifer Sheridan, as the firefighter was being relentlessly told to call his mother. However, the second episode of the 10th season of "Chicago Fire" has already aired, and Sheridan, portrayed by Kim Delaney, did not make an appearance — and still hasn't, in fact.
In 2020, Delaney joined the cast of the daytime drama series "General Hospital," according to Deadline. Instead of returning to reprise her role as Severide's mother on "Chicago Fire," Delaney has returned to her roots as a soap star, as she previously grew a large fan base as Jenny Gardner on "All My Children."
Thus far, there is no word on the fate of Delaney's character on "Chicago Fire" and if she will make an appearance at some point in the near future.
