Family Guy Season 10 Episode 19 Mr. and Mrs. Stewie Episode Title:Mr. and Mrs. Stewie.Episode Description:At a book reading with Brian, Stewie is forced to come along when Brian gets a score with a college girl. To make up for keeping Stewie out all night, Brian takes Stewie to the park where he meets Penelope, a girl who takes revenge on a boy who pushes Stewie. Playing together, Stewie discovers they share a love of advanced weaponry. When he discovers that she actually managed to kill her mother, he becomes totally enraptured. They continue to spend time together, wreaking havoc through town and the world.