Chicago Fire Will Premiere 15th Season on October 7
The long-running drama returns to NBC this fall with new cast members and a character departure.
Updated on Sept. 29, 2026 in People
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Chicago Fire will debut its 15th season on October 7, 2026. The premiere episode, titled New Blood, marks the departure of actor Dermot Mulroney from the series.
Why it matters
The show continues its long-running narrative in Chicago with significant changes to the firehouse lineup. The addition of new candidates aims to integrate fresh talent into the established team following the previous season finale.
The show enters its 15th season of production on NBC. The premiere episode features the introduction of four new cast members serving as candidates.
The players
Dermot Mulroney
The actor portrays battalion chief Dom Pascal and is scheduled to depart the series in the premiere episode.
Joe Eichorst
He joins the cast as a new candidate entering the firehouse team for the 15th season.
K.C. McNeil
The performer is one of the new actors added to the cast as a candidate this season.
Matthew Daddario
He is joining the ensemble cast as a candidate in the upcoming season.
Da'Vinchi
The actor rounds out the list of new candidates joining the firehouse team.
The details
Promotional photos from the upcoming season reveal that characters Kidd, Herrmann, and Ballard survived the cliffhanger from Season 14. Battalion chief Dom Pascal, played by Dermot Mulroney, will exit the show during the premiere.
Timeline
October 7, 2026: The premiere episode of Chicago Fire season 15 airs.
Market Landscape
The long-term success of the Chicago Fire franchise remains a staple for NBC, positioning the network to maintain its stronghold in the procedural drama sector. The introduction of new cast members reflects a strategic effort to refresh the series while maintaining continuity with legacy characters.
Viewers can expect changes to the team dynamic as the four new candidates integrate into the firehouse. Fans can tune in to the premiere to see which legacy characters return alongside the new ensemble members.
The takeaway
The return of the long-running series marks a significant transition point for the core team in Chicago. Fans of the franchise should prepare for a shift in leadership and the introduction of new talent following the departure of a major character.
Further reading
For more on the cast and changes to the production, visit the People section.
Source note: This article includes information reported by TV Insider.
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