When Kristy sees how much her little brothers and sisters want to play on a softball team, she organizes a ragtag team of her own. They may not be champions, with Jackie Rodowsky, walking disaster, on the team, but at least they have team spirit! Now Bart's Bashers have challenged Kristy's Krushers to a game. The Bashers really are lean and mean...but the worst part of it all is that Kristy has a giant crush on the Bashers' coach.

Stacey's so excited! She's invited her friends in the Baby-Sitters Club to New York City for a long weekend. It's going to be perfect - a party and a sleepover on Friday, a big baby-sitting job on Saturday, and lot of sightseeing on Sunday. But what a mistake! The BSC is way out of place in the big city. Mary Anne sounds like a walking guide book, Dawn is afraid of everything, Kristy can't keep her mouth shut, and Claudia is jealous of Stacey's friends. Can Stacey be in the BSC anymore?

Mary Anne should never have thrown away that chain letter she got in the mail. Ever since she did, bad things have been happening - to everyone in the Baby-Sitters Club. With Halloween coming up, Mary Anne's even more worried - what kind of spooky thing will happen next? Then Mary Anne finds a new note in her mailbox: Wear this bad-luck charm, it says. Or else. Mary Anne has to do what the note says. But who sent the charm? And why send it to Mary Anne? If the BSC doesn't solve this mystery soon, their bad luck might never stop!

After Kristy's mom got married, her family moved to Watson's house in a new neighborhood. But the kids there aren't very friendly - in fact, they're total snobs! They criticize Kristy's clothes, make fun of the Baby-Sitters Club...and worst of all, they laugh at Louie, Kristy's pet collie, who's going blind. Nobody does that and gets away with it! Kristy's fighting mad, and she's not going to put up with a Snob Attack any longer - and neither is the BSC!

Claudia, who has always been very different from her sister, comes to the conclusion that she must be adopted. 

Oh no! Stacey McGill is moving back to New York! That means no more Stoneybrook Middle School, no more Charlotte Johanssen, and worst of all...no more Baby-Sitters Club!

Dawn and Mary Anne are finally stepsisters and also roommates. When they begin to get on each other's nerves, Dawn comes up with a solution which pleases everyone. 

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! Dawn's going to do everything she can to help her charges win, even if Margo's only talent is peeling a banana with her feet. But then Kristy, Mary Anne, and Claudia are helping Karen, Myriah, and Charlotte enter the contest, too. It's hard to tell whether the competition is fiercer at the pageant - or in the BSC!

Mallory discovers that the terrible twins she baby-sits on a regular basis are not really bad - they just want to be treated as individuals.

Receiving a desperate call from the Mancusi family, Jessi takes on an unusual sitting job caring for three dogs, five cats, two birds, a cage of hamsters, guinea pigs, fish, a snake, rabbits, and turtles.

The members of the Baby-Sitters Club come to the rescue to help Mary Anne search for her beloved kitten, Tigger, who has suddenly vanished.

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. Soon all the kids in Stoneybrook want to learn to sign...which keeps the baby-sitters busy. Jessi's the busiest of all: she working on another secret just for Matt. Will she be able to keep the secret and pull off her special event?

Claudia has always been the most outrageous girl in her class...until Ashley Wyeth comes along. Ashley's really different - she dresses in hippie clothes, wears six earrings and work boots, and is the most fantastic artist Claudia has ever met. Ashley says Claudia has artistic talent, too, but thinks Claudia should spend more time on her "calling" and stop wasting time on the Baby-Sitters Club. The baby-sitters are sick of Ashley Wyeth, and they feel like Claudia is a traitor. Claudia has to decide: either the BSC or the new girl - one of them's got to go!

Stacey's parents are getting a divorce. Stacey is sad and angry, and she has a big decision to make - stay in New York with her father, or move back to Stoneybrook with her mother.

Mallory and Claudia are helping Stacey unpack from her move back to Stoneybrook when they find an antique trunk in the McGill's attic. Stacey doesn't want the dusty thing, so she gives the trunk to Mallory...who finds an old diary at the bottom of it. The diary belonged to Sophie, a girl who lived in Stacey's house in the 1890s. As Mallory reads deep into Sophie's diary, she discovers a mystery on their hands to solve, because Stacey's house isn't big enough for her, her mom...and a family of ghosts!