Melissa Ponzio

Herrmann goes against orders when he returns into a fire to save a child. He later takes matters into his own hands again.

Chief Boden makes a risky, last-minute decision in order to save the squad trapped in a burning warehouse.

Severide comes back to work but isn't his usual self, Mills discovers more information about his father's family and Herrmann asks Molly investors to share ideas that could help turn the business around.

Casey adds to his and Dawson's relationship woes during a wild night out with Severide. Plus, a house fire puts a couple's life in danger.

Chief Boden turns up the pressure on Severide and Casey to investigate the cause of the fire that trapped his wife; Mouch is over-competitive in the firefighter muster challenge.

Boden pushes his team to pull it together in the aftermath of the explosion, Casey works to track down a missing Severide, Newhouse brings news about one of Mills' relatives and Herrmann and Otis come up with new goals.