"On the Warpath"
Season 4, Episode 18
Air date April 5, 2016
Written by Sarah Kucserka
Veronica West
Directed by Joe Chappelle
Runtime 42 minutes
Episode Guide
"What Happened to Courtney"
"I Will Be Walking"

On The Warpath is the eighteenth episode in Season 4 of Chicago Fire.


Sylvie is threatened when she witnesses a murder.

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