Severide and Cruz find a child's remains inside a chimney while investigating a possible carbon monoxide leak inside a home. In other events, Casey braces for the worst in his run for alderman while Alderman Becks continues to bad mouth him to the press.
| Title | What Happened to Courtney |
|---|---|
| Genres | Drama |
| Release Date | 2016-03-29 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 4 |
| Episode Number | 17 |
| Production Companies | Universal Television, Wolf Entertainment |
