Children's Mystery Books

Mystery Books for Grades 1 - 6

Updated June 18, 2026
Drag items up and down to your preferred order then select the "Save Order" button.
Agent Moose
O'Hara, Mo
Paper Book
Agent Moose, the best (worst) secret agent in the Big Forest, and his slightly-more-intelligent sidekick Owlfred are on the case in this new full color graphic novel chapter book series from Mo O'Hara, author of My Big Fat Zombie Goldfish, illustrated by Jess Bradley!...

AR: 3.0

Lexile: 400

The case of the strange splash
Winkler, Henry
Ebook
From New York Times bestselling creators, Emmy Award-winning actor Henry Winkler, children's book author Lin Oliver, and Caldecott Medal-winning author-illustrator Dan Santat, comes a hysterical, full-color chapter book adventure When the Pond Squad is invited to...

AR: 3.9

Lexile: 680

Cosplay crime
Chan, Marty
Ebook
Shy thirteen-year-old Bree must channel her inner anime heroine to solve a crime at the Anime Expo. Bree Wong and her best friend, Alix, are so excited to be at the anime fan convention. They're dressed as the lead characters from their favorite anime series. Bree cosplays as Red Squirrel,...

AR: 4.2

Lexile: 610

Escape from Mr. Lemoncello's library
Grabenstein, Chris.
Paper Book
THE START OF THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD! Can you escape from what James Patterson calls "the coolest library in the world"? Follow along and solve the clues in this interactive adventure! From the co-author of Murdle...

AR: 4.5

Lexile: 720

King and Kayla and the case of the missing dog treats
Butler, Dori Hillestad
Paper Book

AR: 2.2

Lexile: 440

Montgomery and the case of the golden key
Crowder, Tracy Occomy
Audiobook
In 2008 Chicago, in the Southside community of Washington Park, Montgomery "Monty" Carver had hopes for the best summer ever! Unfortunately, things aren't going as planned. Monty is struggling to prove to his parents that he's old enough to be without adult supervision--especially after a very...

AR: 4.6

Lexile: 660

Murder is bad manners
Stevens, Robin
Paper Book
Two friends form a detective agency--and must solve their first murder case--in this "sharp-witted debut" (Publishers Weekly, starred review) that is the first adventure in a brand-new middle grade mystery series set at a 1930s boarding school. Daisy Wells and Hazel Wong...

AR: 5.9

Lexile: 910

Murray the ferret
Florence, Debbi Michiko
Paper Book
Since the Takano family's new foster pet, Murray the ferret, arrived at their house, all sorts of things have gone missing: shoes, jewelry, keys, coins . . . Although eight-year-old Kaita enjoys solving the mysteries, she worries that finding a forever home for the lovable furry bandit will be near...

AR: 2.9

Lexile: 550

Mystery in Rocky Mountain National Park
Johnson, Aaron
Ebook

AR: 4.8

Lexile: N/A

The mystery of the stinky, spooky night
Manushkin, Fran
Paper Book
When Pedro and his dad walk Katie home on a foggy night, something smelly fills the air! With their noses working extra hard, the two friends have a mystery to solve: What is that making that stink, and why is it following them?

AR: 2.0

Lexile: 440

The Sherlock society
Ponti, James
Paper Book
A New York Times bestseller! In the tradition of Nancy Drew, four kids and one grandfather in Miami tackle a decades-old mystery in this first book full of "atmosphere, history, and lively humor" (Publishers Weekly, starred review) in the Sherlock Society middle...

AR: 4.9

Lexile: 770

Shirley & Jamila save their summer
Goerz, Gillian
Paper Book
This middle-grade graphic novel for fans of Roller Girl and Smile introduces Jamila and Shirley, two unlikely friends who save each other's summers while solving their neighborhood's biggest mysteries. Jamila Waheed is staring down a lonely summer in a new...

AR: 2.8

Lexile: 490

Sisterhood of sleuths
Bertman, Jennifer Chambliss
Ebook
An Indie Next Pick  An Amazon Top 20 Children's Book of the Year An Amazon Best Book of the Month A Barnes and Noble Most Anticipated Book A Common Sense Selection for Families   "An engaging pick for mystery fans and wannabe...

AR: 5.1

Lexile: N/A


Library staff! You can create and contribute to lists. Contact your catalog administrator or log in here.