WPXJ-DT Casey helps his sister and faces down his corrupt brother-in-law; Brett goes out of her way to assist a mother in need; Mills learns about unlicensed private investigation; Dawson starts training with Herrmann. 2026-07-14 Severide wants further investigation when a homeowner saved from a fire is found clutching a suspicious box; Molly's II needs a chef. 2026-07-14 The members of the firehouse spring into action when a helicopter explodes over a densely populated area, scattering debris; a dangerous man corners Brett. 2026-07-14 Dawson and Casey's relationship is tested as the team responds to a truck leaking hydrochloric acid in a busy intersection; Severide learns about Brittany's past; Mouch has dating troubles. 2026-07-14 A house fire puts a couple in danger; Dawson and Casey are pushed apart; the Chicago Holiday Fest gives Molly's II a chance to shine. 2026-07-14 Two members of the firehouse go missing after a routine call; Casey and Dawson struggle to balance their personal and professional lives; Boden and Donna learn their baby has potential complications. 2026-07-15