A Katrina survivor, presumably the granddaughter of a famous blues singer, convinces House's friend Dylan Crandall that he is her father. When the girl is brought in with a deadly illness, House is sure the girl is faking, but Crandall wants her as his daughter and Crandall won't agree to a paternity test. As House and team try to save the girl's life, House and his conscience fight over the truth vs. his friend's real desire to take the girl in.
