[s8e4] Infection, Part I May 2026

Because this episode is part of a continuous storyline, you must watch the following episodes in order to see the full narrative:

Chicago P.D. Season 7, Episode 4 – "Infection, Part III". Episode Overview

Chicago Fire Season 8, Episode 4 – "Infection, Part I" . [S8E4] Infection, Part I

is the fourth episode of Season 8 of the action-drama series Chicago Fire . It serves as the opening chapter of a massive three-part crossover event within the Chicago franchise, involving characters from Chicago Fire , Chicago Med , and Chicago P.D. . Crossover Viewing Order

A rare but deadly "flesh-eating" bacteria begins spreading rapidly across the city . Because this episode is part of a continuous

As panic grows, the city's heroes face a race against time to identify the source of the bacteria before it becomes a full-blown epidemic. Where to Watch

You can find this episode and the rest of the crossover on major streaming platforms and digital stores: is the fourth episode of Season 8 of

The story begins during a Chicago Bears tailgate at Soldier Field, where a man collapses with a horrific, fast-moving infection .