Michael tries to figure out how to tunnel in a building that houses a guards' break room, Kellerman and Hale attempt to kill Veronica and LJ, and T-Bag tries to dodge responsibility for Bob's murder.
Still reeling from the discovery about Jack, Sara decides to recommit to her marriage, and the murder investigation brings Jack face to face with Sara's husband, Drew.
Dr Charles and Dr Reese search for answers when a mother brings in her daughter claiming she is possessed. Dr Rhodes and Dr Bekker are tasked with finding a way to save a pair of conjoined twins.
The shooting of Dr Charles moves to the courtroom. Dr Halsted and Dr Manning work on a heart-wrenching case.
A man with no apparent symptoms causes problems when Ethan attempts to diagnose him, while Sarah resorts to using pepper spray on a patient.