Rachel Cerda

Nazdarovya!. Dawson puts herself in danger to help her brother.

Lindsay calls on Voight and his unit for help with her first case on the federal task force.

When They See Us Coming. When the FBI takes over Firehouse 51 for an undercover mission, Casey and Severide volunteer to assist with the investigation. Kidd attempts to help Severide come to terms with recent developments he's been managing.

The Apple Doesn't Fall Far From The Teacher. When a subway train goes off the tracks, Marcel volunteers to help the victims. Taylor and Halstead must decide if they're willing to risk their jobs to save a patient. Asher and Archer clash over a pregnant patient.

Michael tries to clear Haywire's head and jog his memory of the missing piece of the blueprint tattoo; Bellick wants to auction off Michael's cell.