Ann M. Martin

Mrs. Piggle-Wiggle has gone away unexpectedly and left her niece, Missy Piggle-Wiggle, in charge of the Upside-Down House and the beloved animals who live there....

When Kristy Thomas has the great idea to form a baby-sitters club - a chance to earn money and spend time with her friends, all while doing something they each love to do - she has no idea how much the club will change everything....

Danielle's parents are so glad she is home, although still battling leukemia, that they allow the nine-year-old girl to do anything she wants - but she decides to joyride in the family car while Jessi is babysitting for her....

Mallory is going away to boarding school, but her best friend Jessi doesn't want her to go. It's the biggest fight in BSC history - and Mary Anne is caught in the middle!

Claudia's loving the October weather and her many friends, both in school and in the BSC. But when she throws a party to bring her two groups of pals together, she creates more problems than she solves....

Joining the Mathletes and feeling confident after her first math meet triumph, Stacey is troubled when her father gets tickets to a huge rock concert on the same night of the Mathletes championship.

Jessi knows a secret language! She learned it from Matt Braddock, the BSC's newest charge. Matt's been deaf since birth, and he uses sign language to speak. Since Jessi is Matt's baby-sitter, she's been using sign language, too....

TBD Kristy's mom is getting married, and everyone is coming to town to help, bringing their kids with them. Fourteen kids! Kristy is sure she and Stacey, Claudia, Mary Anne, and Dawn can handle it - they're professional baby-sitters after all....

Lately, the pressure's really been on Stacey. She hasn't been feeling well, her schoolwork and baby-sitting jobs are almost out of control, and she's sick of being in the middle of her parents' fights....

Trying to cheer up her twin, Anna, who has been diagnosed with scoliosis, Abby fears that the condition is driving them apart when Anna seems to not want Abby's help and begins to do things on her own....

When Kristy reluctantly takes part in a hazing prank for her softball team, she worries that her little stepsister, Karen, will find out the truth and think badly of her....

Dawn has always thought there was a secret passage hidden in her house. But that doesn't explain why creepy things happen when Dawn's at home, or the spooky noises coming from behind her bedroom wall....

Deciding that she wants to move back to California permanently, Dawn worries about what she will say to the rest of the baby-sitters, who do not understand when they hear the news secondhand....

Bone and his sister, Squirrel, are stray dogs born in a shed. Left mother-less as puppies, the two dogs survive together for a while, but are soon wrenched apart, and Bone must now go on, alone....

When Stacey sits for the two Brooke kids, she can't help noticing that their dad is a very cute single father, and the perfect match for her single mom....

Lately, it seems like each of the baby-sitters besides Dawn has been singled out...and she's a little jealous. But now it's Dawn's turn to shine: Mrs. Pike has asked her to help prepare Margo and Claire for the Little Miss Stoneybrook contest....

When Lou McNally was last in Stoneybrook, she was the Worst Kid Ever. Now she's back...and Abby is going to be her baby-sitter. She's prepared for the worst, but Lou is a perfect angel....

Stacey quits the club, but suddenly realizes that her new "friends" are using her as a cover for their drinking, shoplifting, and other ideas of summer fun....

Stacey and Mary Anne are baby-sitting for the Pike family for two weeks at the New Jersey shore. Things are great in Sea City: There's a gorgeous house right on the beach, a boardwalk, plenty of sun and sand...and the cutest boy Stacey has ever seen....

Claudia's sister, Janine, is too busy being smart to be nice to anyone - even their grandmother, Mimi. But Claudia doesn't have to see Janine too much this summer, since the Baby-Sitters Club is starting a new play group. It's going to be so much fun....