An ailing man suffers from blackouts and sleepwalks, leading the team to wonder if his sleepwalking is a symptom, or how the man is becoming exposed to something else. When the man's daughter grows ill as well, the team must provide a diagnosis before both die. Meanwhile, Cuddy adopts a newborn but when the birth mother displays a rash, she has to make a decision between putting the mother or daughter at risk.
Elenco: Hugh Laurie , Jesse Spencer , Omar Epps , Robert Sean Leonard , Peter Jacobson , Olivia Wilde , Odette Annable , Charlyne Yi , Anne Dudek , Kal Penn , Jennifer Crystal Foley , Bobbin Bergstrom , Sela Ward , Meaghan Martin , Michelle Trachtenberg , Odette Annable , Olivia Wilde , Peter Jacobson .