KPXE-DT Mills questions Benny about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires. 2026-09-28 A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers. 2026-09-28 A paramedic candidate joins Shay and Dawson for a few shifts; Cindy Herrmann experiences pregnancy complications while her husband is out of town; Casey receives an unexpected visit. 2026-09-28 Detective Voight shows up, looking to cash in the favor Dawson owes him; Casey's social life takes on a familiar pattern; Molly prepares for the grand opening of Dawson, Herrmann and Otis's bar; Severide faces a threat to his career. 2026-09-28 After a series of deadly ambushes, the team goes undercover to bring down a dangerous new drug dealer who is determined to push out the competition; Ruzek's informant proves to be a loose cannon, which could upset the whole operation. 2026-09-28 Ruzek and Atwater are tasked with making an arrest after a high-profile shooting; the situation becomes complicated when it's clear someone doesn't want them to make it back to the station. 2026-09-29