The Fly Team searches Bucharest for a Romanian surrogate who goes missing shortly before carrying the biological child of an American couple to term. Also, Forrester’s concern about the safety…

Kidd spreads her wings as a lieutenant. Chief Hawkins rides with Ambulance 61 to learn more about Brett. Casey takes a trip out of town. A Ritter date night turns…

Griffin learns the truth about his father’s death and reveals why he really came to visit Casey. Gallo, Ritter and Violet take steps to expand their microbrewery business.

Old emotional wounds are opened when Lieutenant Severide’s father Bennie comes to town and clashes with Chief Boden over the death of their former colleague. Mills helps a distraught driver…

Casey faces pressure to cover for a cop’s son, who was responsible for a drunken-driving accident that left a teenager paralyzed. Meanwhile, Severide ignores his doctor’s warnings that his neck…

Boden forces members of Firehouse 51 to pull themselves back together in the aftermath of a harrowing fire explosion. While Severide goes missing for one week too many, Casey works…

When a fire claims one of their own, there’s plenty of guilt and blame to go around. Lt. Matthew Casey, in charge of the Truck, tries to carry on, but…

Severide is hiding a serious shoulder injury sustained in the fire that killed Andy Darden, and grapples with his guilt as he fights to rescue a construction worker trapped in…

An arsonist targets Lt. Severide. Meanwhile, Station 51 is under scrutiny by Gail McLeod, a financial consultant for the city who is deciding if any firehouses should be closed. Mouch…

The team literally finds themselves in the dark when the investigation into the death of a lieutenant is connected to a city-wide blackout.