|What Happened to Courtney|
|Season 4, Episode 17|
|Air date||March 29, 2016|
|Written by|| Matt Olmstead|
|Directed by||Jeffrey Hunt|
"On the Warpath"
What Happened To Courtney is the seventeenth episode of the fourth season and the 86th overall episode of Chicago Fire.
Severide and Cruz discover the remains of a case that may be connected to a case Severide worked on years ago.
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