Frank (Joe Regalbuto) considers himself quite the clever fellow when he chooses a present for Murphy's 42nd birthday. The "gift" turns out to be a woman named Maddie (Christine Ebersole), who for the next 12 hours will pretend to be the sister that Murphy (Candice Brown) never had. It hadn't occurred to Frank that Murphy never wanted a sister--and she certainly doesn't want the annoyingly persistent Maddie! ~ Hal Erickson, Rovi