Anthony Ferraris

Brett waits for life-changing news; Herrmann encounters a psychic with a grave warning on a call; Kidd finds a new lead on the Homeland Security case.

Severide wants to implicate the serial arsonist, Dawson and Shay face the unexpected on a routine call, suspicions indicate Clarke is the mole, and Mouch campaigns for union president.

As disaster befalls one of the crew, members of Firehouse 51 must band together in their hour of need.

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.

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.

Kelly is a law unto himself in his pursuit of Katie's kidnapper, while Dawson's grudge against Rebecca grows when she joins Firehouse 51.