Chicago Fire/The First Symptom

The First Symptom
Season 11, Episode 17
Airdate	March 29, 2023
Written by	Matt Whitney
Directed by	Paul McCrane
Stream
← 11x16 Acting Up	11x18 → Danger Is All Around
Chicago Fire — Season Eleven

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The First Symptom is the seventeenth episode of the eleventh season of Chicago Fire, and the two hundred thirty-fourth episode overall.

Starring: Taylor Kinney (Lt. Kelly Severide) (credit only), Kara Killmer (Paramedic Sylvie Brett), David Eigenberg (Lt. Christopher Herrmann), Joe Miñoso (Firefighter Joe Cruz), Christian Stolte (Firefighter Randy "Mouch" McHolland), Miranda Rae Mayo (Firefighter Stella Kidd), Alberto Rosende (Candidate Blake Gallo), Daniel Kyri (Candidate Darren Ritter), Hanako Greensmith (Violet Mikami)

and Eamonn Walker (Deputy District Chief Wallace Boden)

Guest Stars: Nick Gehlfuss (Dr. Will Halstead), Randy Flagler (Firefighter Harold Capp), Jake Lockett (Sam Carver), Chris L. McKenna (Keith Bamford), Robyn Coffin (Cindy Herrmann), Nardeep Khurmi (Dr. Arthur Bishop), Gary Kraus (Chief Girardi), Carlos S. Sanchez (Javi)

and Tracy Spiridakos (Detective Hailey Upton)

with Anthony Ferraris (Tony), John William Adams III (Kenny James Herrmann), Mo Allen (Marilyn), Jeremy Anderson (Volunteer), Richard Baiker (Reggie), Nicholas Bailey (Andrew), Amanda Calabrese (Annabelle Herrmann), Ajax Dontavius (Mitchell), Bashany Garcia (Office Assistant), Milica Govich (Lori), Presley Rose Jones (Vera), David Von Kampen (Lee Henry Herrmann), Lucas Von Kampen (Luke Herrmann), Bryan Kelly (J.D.), Solange Olivier (Teenager)

Plot Overview

Mouch builds a classic firetruck model for the Deputy District Chief but needs assistance from Gallo and Ritter. Brett and Violet encounter multiple victims with a strange set of symptoms. Cindy's chemotherapy results loom over the Herrmann family.