Karen's Softball Mystery is the 74th book in the Baby-Sitters Little Sister series.
Back Cover SummaryEdit
Karen loves playing on her big sister's softball team, Kristy's Krushers. But then Karen sees strange things going on at practices. Softball gloves and bats are disappearing. Pages are missing from Kristy's notebook. Who is doing this? And why? Karen and her friends are going to try to find out. Can they save Kristy's Krushers?