Rachel Cerda

In an effort to recreate the missing piece of the tattoo, Michael gets transferred to the psych ward, seeking the help of Haywire. Meanwhile, T-Bag and C-Note have to join forces.

Lindsay calls on Voight and his unit for help with her first case on the federal task force - to find a local drugs baron. Platt relegates Burgess to desk duty and goes out on patrol with Roman. Things heat up between Lindsay and Halstead.

When a subway train goes off the tracks, Crockett volunteers to help the victims. Vanessa and Will must decide if they're willing to risk their jobs to save a patient. Hannah and Archer clash over a pregnant patient.

Dawson attempts to help her brother Antonio unravel the details of his drugs-and-gang investigation, and goes behind his back in turning to an unlikely source for assistance.

When the FBI takes over the firehouse for an undercover mission, Casey and Severide volunteer to assist with the investigation. Meanwhile, Kidd attempts to help Severide come to terms with recent developments he has been managing.