Chase Carter (Jonathan Scarfe) is John's first cousin and a "functioning" heroin addict. Carter, with the assistance of his colleague Anna, attempts to detox and rehabilitate him, but fails. Chase eventually overdoses, resulting in severe brain damage. Carter pleads for the family to keep Chase in physical therapy, and Chase improves significantly. Elaine Nichols Carter (Rebecca De Mornay), the ex-wife of another of Carter's cousins, comes to the hospital for treatment for breast cancer and she and Carter have an affair.