Jake Lockett

Firehouse 51 hosts a Halloween open house. Kidd and Severide help a young girl after she gets kicked out of her home.

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.

Kidd and Severide's honeymoon is interrupted by a dangerous person from their past. Kidd's former academy classmate joins Firehouse 51. Brett and Violet reflect on their relationships.

Herrmann is tasked with fulfilling a man's dying wish. Kidd reflects on her Girls on Fire programme after one of her students graduates from the Fire Academy. A heckler harasses Firehouse 51.

A familiar face returns to Firehouse 51 to serve with Kidd on a special task force. With Tony days away from breaking the CFD's perfect attendance record, Mouch and Capp work to keep him safe. Old memories and grudges resurface when Gallo reunites with a family member.

Javi spends a couple of shifts at Firehouse 51. Kidd and Carver work together to help Carver's former boss. As Hawkins and Violet's relationship blossoms, Gallo turns his attention elsewhere.