What Happened to Courtney
| Episode Number | 17 |
|---|---|
| Season | 4 |
| Aired | 2016-03-29 |
| Overview | 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. |
| Runtime | 41 minutes |
| Absolute Number | 86 |
| Finale Type |