[s8e4] Infection, Part I Apr 2026

: The original victim, Stuart Anderson, is identified as a lab assistant who had previously made threats via email, suggesting a bioterrorist plot. Personal Stakes and Danger

: Firehouse 51 responds to a major fire at Central Chicago University . While inside, Kelly Severide notices a laboratory wall bearing the same "BRT" initials the original victim mentioned.

The horror starts at a where several first responders are relaxing. [S8E4] Infection, Part I

The episode raises the stakes by placing the main characters in direct peril.

: Additional cases surface, including a woman and her child at a gas station, leading the CDC to step in as the situation escalates into a full-scale city epidemic. Investigation and Suspicion : The original victim, Stuart Anderson, is identified

: A man named Stuart Anderson suddenly collapses, revealing a gruesome infection on his leg while chanting the letters "BRT" .

As the medical crisis unfolds, the teams begin to suspect this isn't a natural occurrence. The horror starts at a where several first

The story begins with a rare and terrifying (necrotizing fasciitis) that begins spreading rapidly across the city. The Outbreak Begins