The team takes on the case of a dreary middle-aged man who has been experiencing unexplained recurring blackouts and time lapses. With possible diagnoses ranging from a stroke to a concussion to toxins from the consumer products he has been testing for work, they soon find that the man, who is raising his 12-year-old daughter on his own, has been experiencing intense sleepwalking spells. As the team tries to find out what he could be doing during his sleep to make himself sick, his condition continues to deteriorate and his daughter also falls gravely ill. Meanwhile, House finds out Cuddy is going to adopt a baby that is due in two weeks. But when Cuddy meets the birth mother in person and notices a strange rash on her arm, Cuddy brings the mother to Princeton-Plainsboro where her condition worsens. Cuddy must take on the case as both a doctor and a potential mother, and she and the team are faced with a heart-wrenching decision that could risk either the birth mother’s or the baby’s life.