The medical staff and Joan Halloran fight back when a large private hospital dumps an indigent, unstable emergency patient on the E.R.; Ehrlich seeks advice about his relationship with Roberta; Daniels is tied to the drug abuse charges against White; and Dr. Ridley and Morrison try to figure out a woman's violent mood swings and personality changes. Luther loses a father figure. A bored teenager wreaks havoc with the hospital's computerized records.