Karen's Stepmother is the 49th book in the Baby-Sitters Little Sister series.
Back Cover SummaryEdit
Karen is spending more time at the big house now. And things sure are different! There are tons of people around, and chores to do. Plus, Karen has a new stepmother to get used to.
Elizabeth is okay at first. But then Karen gets in big trouble. And it is all her wicked stepmother's fault!