Ann M. Martin

When Kristy, Claudia, Mary Anne, and Stacey, the members of the Baby-sitters Club, each receive mysterious calls while they are working, they decide to find out who is responsible.

When a fight breaks out among the members of the Baby-sitters Club, timid Mary Anne finds herself becoming more assertive as a babysitter and in her relationships with her father and friends.

During the summer before their seventh-grade year, Kristy, Mary Anne, Claudia, and Stacey tackle difficulties, including family problems, crushes, moving, and making new friends.

Although she will miss her friends, Mallory is ready to pack her bags, say good-bye to Stoneybrook, and set out for boarding school, where she encounters a new group of friends, but life at Riverbend Hall also means dealing with a nasty new roommate.

Moving to the upside-down house in Little Spring Valley to take over her aunt's duties, Missy Piggle-Wiggle concocts inventive cures for child behavior challenges.

After their parents die, Flora and her sister Ruby move to Camden Falls to live with their grandmother, Min.

Best friends Annabelle and Tiffany risk placing all of dollkind in danger when they run away while trying to prevent Tilly from being sent back to London before they can determine if she is Annabelle's long-lost baby sister.

Deciding a new haircut will give her the boost she needs, Karen is devastated when the hairstylist cuts her hair all wrong and wonders if she will ever get back to feeling like her usual confident self.

When her mother's remarriage takes her family into a much wealthier neighborhood, Kristy finds herself surrounded by snobbish girls who compare clothes, make fun of the Baby-sitters Club, and insult her aging dog.

At the urging of a very artistic new girl who encourages Claudia to practice art instead of caring for kids, Claudia considers leaving the club and the other members give her an ultimatum.