Someone is stealing equipment from Karen's softball team. Pages are missing from coach Kristy's notebook. Karen and her friends set out to find the culprit.
Karen and her friends go to farm camp, where she takes care of a little lamb. When she decides to enter him in the county fair, Tia, who lives on a farm, tells her she can't win, but Karen is determined to try anyway.
When someone breaks the rusty lock on Karen's new bike and steals it from the playground, it's up to her to find the thief before the town bike-a-thon.
Mary Anne gets a new haircut, some new clothes, and a little makeup. Now she can't wait for the Baby-sitters to see her. But the Baby-sitters can't believe what she has done, and that makes Mary Anne mad.
Mary Anne's father never talks about her mom, who died when she was a baby, so she goes up to the attic and looks for anything she can find that will tell her more about her mother.
Mallory is working on an important writing project and her big, noisy family won't leave her alone. She feels like a baby-sitting slave. Should she go on strike?.
Mary Anne loves sitting for the Lowells. But when Claudia meets the family, Mrs. Lowell will barely look her in the eye and the kids are rude. The BSC will not rest until they find out what Claudia did and why the Lowells acted the way they did.
