An army of surgeons prepares to separate conjoined twins. Asher reconnects with someone from her past. Archer treats a tyrannical boss with a heart problem.
Ripley and Frost uncover shocking information that conflicts with their patient’s DNR. Hannah facilitates an unexpected reunion. The tension between Archer and Lenox comes to a head.
Chicago P.D. steps up Goodwin’s security after she’s threatened online by a former employee. Archer and Frost treat victims from a disciplinary camp injured during a rockslide. Maggie gets roped into delivering a high schooler’s baby.
Halloween chaos takes over the E.D. Hannah helps a pregnant woman with an autistic son. Charles clashes with nurse Jackie on a psych case.
When a commuter ship capsizes, the ED finds itself under water as the staff struggles to treat the influx of new patients and deal with bold new employees taking charge.
