Gaffney gets a surprise visit from a National Accreditation Board of Hospitals representative.
An army of surgeons prepares to separate conjoined twins. Asher reconnects with someone from her past.
Ripley struggles to rescue a woman and her daughter trapped in an abandoned well.
Goodwin's troubles persist. Charles clashes with his former resident over a depressed patient.
Halloween chaos takes over the E.D. Hannah helps a pregnant woman with an autistic son.