Chicago_fire_1x24 Apr 2026

Leslie Shay’s pregnancy test comes back negative. To add to the pain, her ex, Renée, returns at the end of the episode to announce she is pregnant with Severide’s child.

After being denied a promotion to Squad, Peter Mills is disillusioned by firehouse politics and fills out an application for the police department.

Dawson visits Casey’s disheveled apartment and finds him in a state of deep depression. The episode ends with a poignant hug between the two. 🗝️ Key Details for Fans Ending Status Casey Emotionally broken; seeking comfort from Dawson. Severide Facing a bombshell arrival from pregnant ex, Renée. Mills Applying to the Chicago Police Department. Mouch Met a Japanese woman online, hinting at a new romance. If you're looking for more, I can: Chicago_fire_1x24

Christopher Herrmann is taken hostage at shiv-point.

While he is fighting for his life, Herrmann’s wife Cindy undergoes an emergency C-section. He arrives at the hospital just in time to meet his healthy new son. Leslie Shay’s pregnancy test comes back negative

After extinguishing a cell fire, a power outage locks the team inside with volatile inmates who have stolen guard keys.

The central action takes place during a structure fire at a maximum-security prison. Dawson visits Casey’s disheveled apartment and finds him

While the men are trapped, personal milestones unfold outside the prison walls.