Karen is very proud of her big stepsister Kristy. So she's been copying everything Kristy does, to be just like her. Then Kristy does something terrible. What would Karen think of her big sister if she knew the truth?

Karen is upset when she learns that her step-brother, David Michael, might join her school class.

Karen's neighbors are on vacation, and their house-sitter is acting strange. Using a clever snooping scheme, Karen catches the sitter in a computer crime.

The big news in Kristy's neighborhood is that the Papadakis family is getting a foster child. The Baby-sitters think taking in a troubled child is a really special thing to do. Kristy's sure the new kid will fit right in. Only Lou (and don't call her Louisa!) turns out to be a terror. She's rough, and tough, and none of the kids want to play with her. Kristy knows that she should feel sorry for Lou. But Kristy's even sorrier that she has to baby-sit for her!

It's the biggest crime in Stoneybrook history--one of the town's mansions is missing! Kristy & Co. are hot on the trail of the Cat Burglar, who left his sign at the scene of the crime.

Stacey's so excited! She's invited her friends from the Baby-sitters Club down to New York City for a long weekend. It's going to be perfect - a party and a sleepover on Friday night, a big baby-sitting job on Saturday, and lots of sight seeing on Sunday. But what a mistake! The Baby-sitters are way out of place in the big city. Mary Anne sounds like a walking guide book; Dawn's afraid of everything; Kristy can't keep her mouth shut; and Claudia's jealous of Stacey friends. Does this mean Stacey can't be the Baby-sitters' friend anymore? Will the Baby-sitters Club fall apart?

The megahit series returns to charm and inspire a new generation of baby-sitters! When Claudia's beloved grandmother, Mimi, has a stroke, it changes everything. Instead of spending the summer baby-sitting, Claudia is Mimi-sitting. She could use a little help, but her impossible sister, Janine, just can't be bothered. Claudia is trying hard to be nice -- but Janine is just so mean!

What happens when you're so excited about riding the school bus with the big kids for the first time that you actually get sick--in front of everyone? Karen finds out in this story.

Stumbling upon an old map that says that there is a hidden treasure in her backyard, Karen follows the clues to find an ancient box filled with old coins.

Dawn and Claudia have a perfect day planned. They've invited Dawn's brother and three other kids to join them on a sailing race out to Greenpoint Island. The girls have even packed a picnic lunch for the adventure. But then a big storm blows up in the middle of the race. And Claudia and Dawn and the kids never return from the island. The Baby-sitters can't believe it's true--two of their members are missing!

It's all-girls week at the lake with Karen's family. Karen, Hannie and Nancy play at their secret clubhouse, learn to fish, tell stories around the campfire. and look for the Shadow Lake Monster!

Kristy and Carey have always been arch rivals. The feud reaches a fever pitch when they're assigned to write biographies about each other.

All kids love a snowy day, and Karen can't believe her luck--a day off from school because of snow. But when Karen gets in over her head in the snow shoveling business, it's up to her and her friends to find a way to dig themselves out.

Karen's class is studying wild animals. First everyone in the class picks one to do a report on; then they get to make a sculpture of their animal. But the best project is the class field trip, where Karen discovers that a trip is lots more fun than a regular school day--especially when your class goes to the zoo!

Maggie unearths dark family secrets after her little sister disappears in this heart-pounding mystery When sixteen-year-old Maggie’s father and stepmother leave home for a long-overdue honeymoon, Maggie and her older brother, Mike, must take care of their four-year-old half sister, Courtenay. On Monday, Maggie puts her sister on the bus, but when Courtenay doesn’t come home that day, Maggie discovers that she never made it to school. The police and Maggie’s terrified family begin an exhaustive search for the little girl. Meanwhile, Maggie is getting creepy phone calls and feels like she is being followed. When the police question her, Maggie learns more about why she and her brother are not allowed to see their mother. Soon after, Maggie’s mom reaches out to reunite with her kids. Is this a strange coincidence or is there a connection to Courtenay’s disappearance? This ebook features an illustrated personal history of Ann M. Martin, including rare images from the author’s collection.