(Jesse Spencer) made a notable return, and as of 2026 updates, has re-signed as a series regular.

For a full breakdown of these dramatic events, check out this Season 11 recap:

struggles throughout the season as his wife, Cindy, battles cancer.

Season 11 of , which premiered on September 21, 2022, serves as a milestone tenth-anniversary season featuring high-stakes drama and significant character shifts across its 22 episodes. The season's narrative arc is defined by major changes for the team at Firehouse 51 , located at 1360 S. Blue Island Ave, Chicago, Illinois . Key Season 11 Highlights Character Departures and Returns :

(Taylor Kinney) faces a significant arc where he departs mid-season (Episode 15) to pursue his passion for arson investigation in Alabama. Major Plot Points :

and his wife Chloe officially adopt Javi, adding a heartwarming family dynamic to the season.