STRANGE SYMPTOMS

Mouch builds a classic firetruck model for the Deputy District Chief, but quickly needs some assistance from Gallo and Ritter.

Brett and Violet encounter multiple victims with a strange set of symptoms.

The results of Cindy’s chemotherapy loom over the Herrmann family.

Air Date: Wednesday, March 29 (09:00PM – 10:00PM) on NBC.

NUP_200721_00005.jpg

Picture 1 of 21

CHICAGO FIRE -- "The First Symptom" Episode 1117 -- Pictured: (l-r) Mo Allen as Marilyn, Kara Killmer as Sylvie Brett, Hanako Greensmith as Violet -- (Photo by: Adrian S Burrows Sr/NBC)