Anthony Ferraris

Cruz hunts for the identity of an unknown ally. Mouch takes steps to help a friend. Vasquez must make a difficult choice.

Firehouse 51 must band together after a devastating fire catches them off guard. Vasquez continues his quest for answers.

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 investigates a suspicious high school fire. Novak gets an unexpected call. Violet brings a 51 firefighter onboard the ambulance for a shift.

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.

Foster faces blowback after pointing out a doctor's oversight, Brett helps Casey look for a new apartment, and Kidd prepares Tuesday the Dalmatian for the Fire Safety Dog Competition. Plus, a serious accusation is levelled against Severide.