Children's Mystery Books

Mystery Books for Grades 1 - 6

Updated January 26, 2026
C
City of Mission Viejo Library
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Little Penguin and the mysterious object
Driscoll, Laura
Paper Book
Little Penguin solves his first mystery in this hilarious new I Can Read! adventure by Little Penguin Gets the Hiccups author Tadgh Bentley. For new readers who are fans of Mo Willems's Elephant and Piggie series and Adam Rubin's Dragons Love Tacos. Little Penguin has...

AR: N/A

Lexile: N/A

The case of the strange splash
Winkler, Henry
Paper Book
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 Detective Duck: The Case of the Strange Splash, a hilarious, full-color...

AR: 3.9

Lexile: 680

Banana Fox and the Secret Sour Society
Kochalka, James
Paper Book
Eisner Award-winning cartoonist James Kochalka makes his Graphix Chapters debut with this laugh-out-loud mystery series! Get drawn into reading with Graphix Chapters! Graphix Chapters are ideal books for beginning and newly independent readers aged 6-8. With approachable page...

AR: 2.5

Lexile: 520

The great Caper caper
Funk, Josh
Paper Book
In the fifth adventure of the Lady Pancake and Sir French Toast series, our delectable rhyming friends find their home covered in darkness and embark on a Las Veggies heist--perfect for fans of The Food Group series. When Lady Pancake and Sir French Toast awake one morning to near-darkness, they are...

AR: N/A

Lexile: 640

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

Bog gone!
Jones, P. Knuckle
Paper Book
Meet detective-in-training Finder and her friends as they try to figure out why everyone in Belly Acre Bog has disappeared in this hilarious graphic novel mystery! Perfect for fans of The InvestiGators! Finder the tree frog absolutely loves solving mysteries. So when all...

AR: N/A

Lexile: 550

The mystery of locked rooms
Currie, Lindsay
Paper Book
*Instant New York Times and USA Today bestseller!* Crack the codes. Find the treasure. Escape the house. From the acclaimed author of Scritch Scratch and What Lives in the Woods comes a action-packed adventure novel about three friends who team up to find a hidden treasure in an...

AR: 4.4

Lexile: 620

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

Cosmos Camp
Giles, Lamar
Paper Book
An Edgar Allan Poe Award Nominee! From Edgar Award nominee and WNDB cofounder Lamar Giles, this middle grade adventure stars the Epic Ellison twins as they race to solve the mystery of Cosmos Camp for young geniuses in a stand-alone companion to the Legendary Alston Boys series. ...

AR: N/A

Lexile: 830

Mystery James digs her own grave
Russell, Ally
Paper Book
Abandoned in a cemetery and raised in a funeral home, a girl who can see and smell the supernatural must solve the mystery of a priceless heirloom stolen from her family's business. Perfect for fans of Netflix's Wednesday and Beetlejuice! "A new middle grade heroine you...

AR: N/A

Lexile: 860

Sisterhood of sleuths
Bertman, Jennifer Chambliss
Paper Book
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...

AR: 5.1

Lexile: N/A

Cosplay crime
Chan, Marty
Paper Book
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

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

Mystery in Rocky Mountain National Park
Johnson, Aaron
Paper Book
Before Jake's grandfather died, he was on the trail of a centuries-old mystery. And he has entrusted that mystery to Jake, leaving behind a set of hidden codes, riddles, maps, and other clues that lead Jake and his friends on a scavenger hunt into the heart of Colorado's wild and rugged Rocky...

AR: 4.8

Lexile: N/A

The Batman & Scooby-Doo! mysteries. Vol. 3
Cody, Matthew
Paper Book
The Dark Knight teams up with Scooby-Doo and Mystery Inc. in a series of adventures and mysteries! It all starts when Batman discovers his original purple gloves are missing-Velma, Shaggy, and Scooby-Doo will have to go back in time to solve the case! Collects The Batman and...

AR: N/A

Lexile: 650

The shiba inu detective tracks down the stolen jewels!
Tabe, Tomoko
Paper Book
CHRIS IS ON THE CASE!Hinata, a shy boy in the fifth grade, receives his first-ever pet when his grandfather brings him Chris, a retired police dog with excellent training and top-notch skills. There's only one problem: Whenever Chris sees a bug, they fly into a panic. Soon, however, their nose is...

AR: N/A

Lexile: N/A

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


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