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Baby Sitters Little Sister Books in Order

Part ofAnn M Martin Books in Order

Explore the Baby-Sitters Little Sister books by Ann M. Martin in reading order, with short summaries to help you choose where to begin Karen's adventures.

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Baby Sitters Little Sister books in publication order

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127 books

1

Karen's Roller Skates

by Ann M Martin

1988

Karen’s new roller skates promise a weekend of tricks and fun, until a fall leaves her with a broken wrist. Determined to collect signatures on her cast, she sets herself the challenge of finding someone famous.

2

Karen's Witch

by Ann M Martin

1988

Karen is convinced her neighbor, Mrs. Porter, is a witch, especially when she notices black robes and a black cat. A meeting at the woman’s house gives Karen another reason to investigate despite rules against spying.

3

Karen's Kittycat Club

by Ann M Martin

1989

Inspired by Kristy’s club, Karen decides to start a cat-sitting business with her friends. Having cats of their own seems like a promising beginning, but finding customers and keeping the new group together prove challenging.

4

Karen's Little Sister

by Ann M Martin

1989

Karen feels overlooked when baby Emily joins the family and takes her place as the youngest sister. When Emily becomes ill, helping care for her gives Karen a new responsibility that challenges her feelings about the baby.

5

Karen's Worst Day

by Ann M Martin

1989

Karen’s day goes wrong from the moment she cannot find her favorite jeans. Disappointments pile up, even Boo-Boo refuses to play, and Karen’s efforts to improve things seem only to lead to more trouble.

6

Karen's Birthday

by Ann M Martin

1990

Karen looks forward to birthday presents and parties at both her parents' houses. What she really wants is one celebration with her whole family together, and she struggles to make the adults understand that wish.

7

Karen's Ghost

by Ann M Martin

1990

Karen believes Old Ben Brewer's ghost lives in her house, but the idea becomes frightening when she and Kristy expect an attic party on Halloween. A once entertaining ghost story now feels much too close to home.

8

Karen's Grandmothers

by Ann M Martin

1990

Karen already has four grandmothers when a nursing-home program gives her a fifth. Grandma B's music and dances feel unfamiliar, leaving Karen to decide how to connect with someone whose interests seem so different from hers.

9

Karen's Haircut

by Ann M Martin

1990

Karen hopes a new haircut will help her feel better about her glasses and missing teeth. When the salon gets it wrong, she worries about classmates' reactions and must find a way to regain her confidence.

10

Karen's Prize

by Ann M Martin

1990

Karen's talent for spelling takes her from a classroom bee toward bigger competitions and television. She loves winning, but her friends think she's showing off, forcing her to balance pride in her ability with their feelings.

11

Karen's Sleepover

by Ann M Martin

1990

Karen's first sleepover should mean spooky stories and fun with friends. A fight with Nancy changes the guest list, and an uncooperative new girl makes Karen wonder how to save both the party and her friendship.

12

Karen's Carnival

by Ann M Martin

1991

Bored with their usual activities, Karen and her friends organize a carnival with games and prizes. Once money starts coming in, they disagree over how to spend it, testing their ability to cooperate on a shared project.

13

Karen's Doll

by Ann M Martin

1991

Karen lends her expensive new doll to Nancy while her friend is sick, intending it as a temporary comfort. Nancy thinks the doll is a permanent gift, leaving Karen with an awkward misunderstanding to resolve.

14

Karen's Goldfish

by Ann M Martin

1991

Karen and Andrew are delighted with their new pet goldfish. When something happens to Karen's fish, Crystal Light, her excitement gives way to sadness, and she struggles to feel better about losing something she loves.

15

Karen's Good-bye

by Ann M Martin

1991

Karen enjoys her friendship with Amanda despite Hannie's dislike of the girl. When Amanda's family plans to move away, Karen must cope with losing a close friend while another friend treats the news much less seriously.

16

Karen's Home Run

by Ann M Martin

1991

A home run makes Karen proud of her softball skills, but her new nickname is followed by a batting slump. With a team parade approaching, she worries that striking out has taken away her right to celebrate.

17

Karen's in Love

by Ann M Martin

1991

Karen and Ricky go from enemies to sweethearts, then start fighting again. Gum in a desk and hurtful teasing threaten their plans, leaving Karen to decide whether their classroom romance can survive another round of disagreements.

18

Karen's New Teacher

by Ann M Martin

1991

Karen loves Ms. Colman's lively second-grade lessons, so a strict substitute comes as an unpleasant surprise. New rules and chores make school feel different, and Karen must adjust while wishing her usual teacher would return.

19

Karen's New Year

by Ann M Martin

1991

Karen encourages everyone to make New Year's resolutions and makes plenty of her own. When she starts monitoring broken promises, her family calls her a spy, turning her enthusiasm for improvement into a source of conflict.

20

Secret Diary

by Ann M Martin

1991

Karen Brewer introduces a diary for readers to complete themselves. Questions about friends, family and wishes, along with space for daily experiences, invite children to record their own thoughts and keep a personal collection of secrets.

21

Karen's Big Joke

by Ann M Martin

1992

Karen loves April Fools' Day and starts celebrating with tricks on her classmates. A new plan targets her whole big-house family, but taking her pranks beyond school raises the possibility that Karen herself will get the biggest surprise.

22

Karen's Ducklings

by Ann M Martin

1992

Learning about spring makes Karen especially interested in baby animals. When she finds a duck nesting outside her classroom, Karen and her classmates watch for the eggs to hatch and discover what it means to care for the new ducklings.

23

Karen's Kittens

by Ann M Martin

1992

Karen finds a stray cat in the toolshed and is delighted when it gives birth to five kittens. Naming them and sending birth announcements is fun, but finding a suitable home for every kitten becomes a much harder responsibility.

24

Karen's Pen Pal

by Ann M Martin

1992

Karen enjoys writing to a second-grader in New York until her pen pal's boasting makes her feel competitive. She invents impressive stories about herself, then faces trouble when the other class plans a visit that could expose her exaggerations.

25

Karen's Pumpkin Patch

by Ann M Martin

1992

Karen's father puts her in charge of the pumpkin patch, and she happily sells pumpkins while keeping an enormous one for herself. When someone begins smashing pumpkins around the neighborhood, Karen and her friends worry about protecting theirs until Halloween.

26

Karen's School Picture

by Ann M Martin

1992

Karen needs glasses just as school picture day approaches, but choosing pretty frames helps her feel grown up. Ricky's teasing changes that confidence into worry, leaving Karen to decide how to face him and her upcoming class photograph.

27

Karen's School Trip

by Ann M Martin

1992

Karen's class is learning about wild animals and eagerly awaiting a trip to the zoo. When flu spreads through the classroom, Karen worries that the outing will be canceled, while also fearing that the children might make the animals sick.

28

Karen's Secret

by Ann M Martin

1992

Natalie trusts Karen with an important secret, but Karen cannot resist passing it on. When Natalie discovers what happened, her anger leaves Karen facing the consequences of gossip and the challenge of repairing a friendship she has hurt.

29

Karen's Big Lie

by Ann M Martin

1993

Unprepared for surprise math quizzes, Karen copies answers from Ricky's paper. Denying it to her teacher and Hannie leaves her hiding a growing problem, afraid of what will happen if everyone discovers she has been cheating.

30

Karen's Big Weekend

by Ann M Martin

1993

Karen spends three exciting days in New York City, visiting sights and enjoying the holiday season. She intends to bring Hannie and Nancy wonderful gifts, but time runs short before she has bought them anything.

31

Karen's Doll Hospital

by Ann M Martin

1993

Karen is upset when her favorite doll, Hyacynthia, breaks a leg. Meeting a toy repairer gives her hope and inspires her to open a doll hospital of her own, turning an accident into a new project.

32

Karen's New Friend

by Ann M Martin

1993

Karen decides that new classmate Addie, who has cerebral palsy and uses a wheelchair, needs her as a best friend. Her constant attention soon threatens the friendship she hopes to build, challenging her assumptions about Addie's needs.

33

Karen's Newspaper

by Ann M Martin

1993

Inspired by a local editor, Karen and her friends start a neighborhood newspaper for children. Reporting secrets about the people around them seems exciting until angry neighbors make them face the consequences of what they print.

34

Karen's Pizza Party

by Ann M Martin

1993

Being chosen queen of Pizza Express gives Karen a crown, publicity and an inflated opinion of herself. When her classmates grow tired of her behavior, she plans a huge pizza party to try to win them back.

35

Karen's School

by Ann M Martin

1993

Karen starts a school to teach Andrew and his friends to read and write. Her enthusiasm becomes bossiness, and students who refuse lessons and homework soon go on strike, leaving their teacher with a difficult problem.

36

Karen's Snow Day

by Ann M Martin

1993

A snow day gives Karen time off school and an idea for earning money by shoveling. Taking on more work than she can manage turns her new business into a problem that requires help from her friends.

37

Karen's Surprise

by Ann M Martin

1993

Karen hopes to star in her class's Thanksgiving play but is cast as the turkey instead. Worried that everyone will laugh at her brief appearance in a brown suit, she starts planning a surprise of her own.

38

Karen's Toothache

by Ann M Martin

1993

Karen has a painful toothache but is too frightened to visit the dentist. Hoping it will disappear on its own leaves her facing a choice between avoiding the appointment and finding the courage to get help.

39

Karen's Tuba

by Ann M Martin

1993

Karen wants a flute when her class begins music lessons, but she receives a large tuba instead. Disappointed by both the instrument and its sound, she sets herself the challenge of becoming a skilled second-grade player.

40

Karen's Wedding

by Ann M Martin

1993

Karen is thrilled when Ms. Colman asks her to be flower girl at her wedding. The arrival of the teacher's niece makes Karen worry that her special role may disappear before she ever walks down the aisle.

41

Karen's Baby-sitter

by Ann M Martin

1994

Karen loves the winter adventures her new babysitter, Bart Taylor, plans for her and Andrew. Developing a crush on him makes an invitation to watch a video at his house seem like a possible date.

42

Karen's Big Top

by Ann M Martin

1994

Karen attends circus camp, eager to try costume making, animal training and tightrope walking. Befriending the circus owner's daughter introduces her to the harder side of a life spent traveling, beyond the excitement of performing.

43

Karen's Brothers

by Ann M Martin

1994

Karen's older brothers refuse to include her in their activities, leaving her furious about being left out. She decides to stop speaking to every male in her family, hoping her protest will make the boys regret their behavior.

44

Karen's Kite

by Ann M Martin

1994

Karen hopes her flying-fish kite will win the class's kite-flying contest. A quarrel with Natalie turns their classmates against her, forcing Karen to deal with damaged friendships while preparing to compete for the prize.

45

Karen's Magician

by Ann M Martin

1994

Karen and Andrew enjoy a magician's performance, until Andrew realizes his special penny has not been returned. Believing the coin has disappeared for good, he needs Karen's help to understand what really happens in a magic trick.

46

Karen's Mermaid

by Ann M Martin

1994

During a visit to Sea City, Karen tries to impress a bossy girl by claiming she has seen a mermaid. A mysterious note apparently from the creature complicates her boast and leaves her wondering what to believe.

47

Karen's School Bus

by Ann M Martin

1994

Karen is thrilled to start riding the school bus, but her excitement turns into an embarrassing bout of sickness. When other children begin teasing her, the journey she anticipated becomes something she dreads every day.

48

Karen's Stepmother

by Ann M Martin

1994

Spending more time at her father's house brings Karen new chores and unfamiliar rules. Trouble adjusting makes her blame her stepmother Elizabeth, threatening their relationship as Karen tries to understand her place in the busy household.

49

Karen's Twin

by Ann M Martin

1994

Audrey decides she and Karen should pretend to be twins, and Karen initially enjoys the idea. But Audrey's copying grows relentless, leaving Karen frustrated as her friend imitates her clothes, speech, and appearance rather than being herself.

50

Karen's Two Families

by Ann M Martin

1994

Karen and Andrew enjoy having two families but miss their father because they spend less time at his house. Wanting equal time with both parents, Karen looks for a way to change the arrangement.

51

Jump Rope Rhymes Pack

by Ann M Martin

1995

This activity book brings together jump rope rhymes about friendship, counting, and Karen Brewer's friends. Instructions cover double Dutch and group games, while space for readers' own rhymes lets them add new verses to their jumping routines.

52

Karen's Angel

by Ann M Martin

1995

Karen and Andrew choose an angel for the family Christmas tree, spending more than they expected. When the decoration breaks, they must find a replacement despite having no money left and little time before the holiday.

53

Karen's Big Sister

by Ann M Martin

1995

Karen feels jealous when her father gives Kristy a special pin and refuses to let Karen borrow it. Taking the heirloom without permission brings a worse problem when she loses it while playing in the snow.

54

Karen's Lemonade Stand

by Ann M Martin

1995

Karen moves her struggling lemonade business from outside her house to softball practice, where customers finally appear. Success takes her attention away from the game, angering Kristy and forcing Karen to balance sales with her team's needs.

55

Karen's Leprechaun

by Ann M Martin

1995

Karen and Andrew join the St. Patrick's Day parade, where a green-clad organizer claims to be a leprechaun. His tales of rainbows and hidden gold fascinate Karen, but believing them could lead her into trouble.

56

Karen's Little Witch

by Ann M Martin

1995

Karen believes Mrs. Porter's granddaughter Druscilla must be a witch, just like her grandmother. Convinced she needs protection, she devises a good luck spell, letting her suspicions turn an ordinary visit into an alarming encounter.

57

Karen's Monsters

by Ann M Martin

1995

Charlie builds a frightening monster for the Halloween parade, and Karen is uneasy around it. When the creature disappears, she thinks it has come alive and must help her stepbrother find it before the parade begins.

58

Karen's Movie

by Ann M Martin

1995

Karen decides to make a movie to cheer up her sick grandad, casting her friends in starring roles. Problems on the set soon leave everyone angry, and her kind gesture becomes a challenge to her friendships.

59

Karen's New Bike

by Ann M Martin

1995

Learning bicycle safety inspires Karen to enter a bike-a-thon, but her old bicycle is too small. After her father helps her get a new one, its theft sends her searching for the thief and her missing bike.

60

Karen's School Mystery

by Ann M Martin

1995

Karen and Addie proudly join the school safety patrol, eager to wear their badges and protect the halls. A string of thefts makes their new responsibility more difficult, and the friends set out to identify the culprits.

61

Karen's Ski Trip

by Ann M Martin

1995

Karen expects a ski trip to be fun, until learning to ski proves harder than she imagined. Seeing younger brother Andrew do better adds frustration, leaving her to decide whether she can keep trying and enjoy herself.

62

Karen's Tattletale

by Ann M Martin

1995

Karen teases Andrew after a preschool classmate tattles on him, only to become the target of his own complaints. As his tattling puts her in serious trouble, their sibling quarrel raises questions about fairness and trust.

63

Karen's Toys

by Ann M Martin

1995

Karen's mother and stepfather forbid toy guns, but she buys some for herself and Andrew to use at their father's house. Different rules across her two homes turn a new purchase into a problem about family boundaries.

64

Karen's Turkey Day

by Ann M Martin

1995

Karen looks forward to visiting grandparents and watching New York City's Thanksgiving parade. Grandad's illness and her parents' busy shop spoil those expectations, leaving her searching for a way to make the family holiday feel special.

65

Summer Fill-In Book

by Ann M Martin

1995

Readers can record summer trips, beach games, camp experiences, pool parties, and holiday celebrations in this fill-in activity book. Spaces for photographs, drawings, ticket stubs, and friends' autographs turn the pages into a personal collection of summer memories.

66

Karen's Big Fight

by Ann M Martin

1996

Karen's rivalry with David Michael intensifies when he changes schools and joins her class. Sharing both home and classroom makes their disagreements harder to escape, while the Thanksgiving season challenges her to consider her stepbrother's feelings.

67

Karen's Cartwheel

by Ann M Martin

1996

Karen loves gymnastics and hopes to join a special team reserved for the best students. She can manage a balance beam and a forward roll, but one missing skill threatens her chances: turning a cartwheel.

68

Karen's Christmas Tree

by Ann M Martin

1996

Karen and her friends plan to surprise an ailing neighbor with a Christmas tree. A huge argument leaves them refusing to speak, putting their generous holiday project at risk just when working together matters most.

69

Karen's County Fair

by Ann M Martin

1996

At farm camp, Karen enjoys vegetables, crafts and baking, but caring for Ollie the lamb means the most to her. She decides to enter him in the county fair, determined despite everyone else's doubts about winning.

70

Karen's Dinosaur

by Ann M Martin

1996

Karen looks forward to visiting New York City, meeting her pen pal Maxie and seeing dinosaur bones at the museum. Her stepbrother David Michael resents being left out, and their argument threatens to spoil the trip.

71

Karen's Grandad

by Ann M Martin

1996

Karen is glad her grandparents are staying at the little house, but Grandad's illness keeps him indoors. She reads with him to lift his spirits, then grows frightened when his condition becomes much more serious.

72

Karen's Half Birthday

by Ann M Martin

1996

Teased for being the youngest in her class, Karen decides turning seven and a half deserves a party. Half a cake and halfway games make the celebration unusual, as she tries to prove she's growing up.

73

Karen's Island Adventure

by Ann M Martin

1996

On a tropical island vacation, Karen enjoys caves, seashells and snorkeling with her family. Her new friend Sandy seems sad and withdrawn, so Karen tries to help her share the adventures that make the trip exciting.

74

Karen's Magic Garden

by Ann M Martin

1996

A family reunion in Maine introduces Karen to her cousin Diana and an old house waiting to be explored. Discovering and restoring a hidden garden brings them closer, while special experiences leave them wondering about its magic.

75

Karen's School Surprise

by Ann M Martin

1996

Karen's class is invited to appear on School Stars, a television quiz show mixing school questions with silly stunts. Karen and her friends practice eagerly, hoping their teamwork will be enough to win the grand prize.

76

Karen's Softball Mystery

by Ann M Martin

1996

Equipment vanishes from Kristy's Krushers' practices, and pages disappear from Kristy's notebook. Karen suspects someone is interfering with the softball team and joins her friends to investigate before the mystery harms their chances on the field.

77

Karen's Tea Party

by Ann M Martin

1996

Bad table manners send Karen and David Michael to charm school. Karen enjoys dressing up and dancing, but the boys' continued rudeness inspires her to arrange a girls-only tea party and teach them a lesson.

78

Playground Games

by Ann M Martin

1996

Karen and the Little Sister world introduce more than thirty playground games with rules and step-by-step instructions. Ball games, hopscotch and string activities give children ideas for playing together and learning familiar games with their friends.

79

Book of Laughs

by Ann M Martin

1997

Karen shares favorite jokes, riddles, pranks and games in this activity collection. Silly songs, unusual snacks and costume ideas help children plan their own funny party, with activities built around laughing and joking together.

80

Karen's Accident

by Ann M Martin

1997

Karen ignores her mother's warning and climbs into a dangerous treehouse, then slips and falls. Rushed to the hospital for an operation, she has to face frightening unfamiliar experiences and find the courage to be brave.

81

Karen's Big Job

by Ann M Martin

1997

Karen spends Take Our Daughters to Work Day visiting her stepmother's office and her father's workplace. Answering phones and making copies seem exciting, but long meetings make her wonder whether school might be more fun after all.

82

Karen's Bully

by Ann M Martin

1997

Bobby Gianelli makes Karen miserable at school, calling her names and spoiling recess. When she learns that he's moving into her neighborhood, she worries that escaping his bullying will become even harder and decides to fight back.

83

Karen's Bunny

by Ann M Martin

1997

Karen and Andrew receive live bunnies from their grandmother for Easter, despite their parents' rule against more pets. Keeping their new animals becomes a problem when the rabbits start chewing things and getting into trouble at home.

84

Karen's Candy

by Ann M Martin

1997

Karen, Hannie and Nancy enter a candy-selling contest as the Three Musketeers. Another team starts taking their customers, turning a friendly competition into a candy war that puts their plans to win under increasing pressure.

85

Karen's Haunted House

by Ann M Martin

1997

Karen's class transforms a house into a spooky attraction for Halloween. Decorating is fun until strange noises and mysterious tricks make the children wonder whether their pretend haunted house has become the real thing after all.

86

Karen's New Puppy

by Ann M Martin

1997

After Midgie runs away, Karen's family gets a new puppy named Sadie. Karen loves her sweet new pet, but caring for a puppy takes work, especially when Sadie has trouble getting along with the other animals.

87

Karen's Pilgrim

by Ann M Martin

1997

A family visit to Plimoth Plantation gives Karen souvenirs and ideas for her Thanksgiving report. She's excited to share what she's learned, but a classmate's determination to spoil her project threatens to ruin all her preparations.

88

Karen's Pony Camp

by Ann M Martin

1997

Karen, Nancy and Hannie attend pony camp, where Karen hopes to enjoy riding Blueberry. Older campers tease them, and Nancy is frightened of riding. With Hannie having the most fun, Karen's dream holiday becomes much more complicated.

89

Karen's Puppet Show

by Ann M Martin

1997

Upset that Hannie and Nancy won't join her at art camp, Karen creates puppets that make fun of her friends. When they buy tickets to her show, she must face the consequences of turning her hurt feelings into entertainment.

90

Karen's Secret Valentine

by Ann M Martin

1997

Karen is assigned her rival Pamela as a secret valentine and tries to be kind. But mean messages that Karen didn't write create confusion, leaving her caught in a Valentine's Day mix-up that threatens to worsen their relationship.

91

Karen's Sleigh Ride

by Ann M Martin

1997

When the Stones lose their barn in a fire and can't afford to rebuild, Karen plans a Winter Festival to raise money. Sleigh rides could help, but getting everything ready before Christmas becomes a challenge.

92

Karen's Telephone Trouble

by Ann M Martin

1997

Karen spends so much time talking on the telephone that she ties up the line and forgets messages. Her father sets limits, but sneaking extra calls only creates more trouble as she struggles to follow his rules.

93

Karen's Treasure

by Ann M Martin

1997

Karen discovers an old treasure map in the backyard and imagines finding something wonderful. Following its clues proves harder than she expects, so she turns to Kristy for help with a search that keeps raising new questions.

94

Karen's Unicorn

by Ann M Martin

1997

A visiting circus advertises a real unicorn, and Karen believes that seeing it could make her wishes come true. Her classmates are doubtful, but Karen holds on to her hopes as she waits for the circus.

95

Karen's Big City Mystery

by Ann M Martin

1998

During a month in Chicago with her little-house family, Karen learns that paintings have been stolen from their building. She collects clues and suspects, turning an unfamiliar city into the setting for her own detective work.

96

Karen's Big Move

by Ann M Martin

1998

Karen moves to Chicago for six months with Mommy, Andrew and Seth. She wants to stay close to her little-house family, but leaving school, friends and her big-house family makes enjoying the new city a challenge.

97

Karen's Black Cat

by Ann M Martin

1998

Karen imagines adopting a pumpkin-colored kitten for Halloween, but her family chooses a black one instead. Disappointment and concern for their older cat, Boo-Boo, leave her wondering how to welcome a pet without neglecting another.

98

Karen's Book

by Ann M Martin

1998

Bored while everyone at the big house is busy, Karen decides to write a book about herself. Conversations with Mommy and Daddy fill gaps in her memories, but turning those stories into a whole book is another challenge.

99

Karen's Chain Letter

by Ann M Martin

1998

Karen wants unusual stamps for her collection, so a chain letter promising postcards and good luck seems perfect. Answering it raises problems she did not expect, turning an exciting collecting opportunity into a difficult lesson.

100

Karen's Christmas Carol

by Ann M Martin

1998

Karen and Andrew both join a production of A Christmas Carol, but Andrew gets the larger role. Karen's pride in her brother gives way to jealousy, making it hard to treat him kindly during the holidays.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shape MRB and its growth.

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