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Mystery Middle Grade – Wonderlit | Wonderlit

Browse → Middle Grade → Interests → Mystery

Mystery Middle Grade

Explore middle grade books about mystery for children.

360 books

Cover of The Giant Baby

A little girl who desperately wants a brother finds herself in the middle of a wild adventure involving a kidnapping, a

Cover of Heidi Heckelbeck and the Magic Puppy

Heidi Heckelbeck #20

Heidi Heckelbeck and the Magic Puppy

When Heidi Heckelbeck finds a lost puppy, her attempt to help with a tiny bit of magic leads to mega-gigantic, unexpecte

Cover of Have a Heart, Geronimo

Geronimo Stilton #80

Have a Heart, Geronimo

Elisabetta Dami

Geronimo Stilton is helping run a new dating agency in New Mouse City, but a mysterious saboteur is trying to break hear

1...7 8 9 10 11...15

Popular Series in This Category

Geronimo Stilton

3 books in this category

A to Z Mysteries Super Edition

3 books in this category

Cover of The Chocolate Sabotage

Thea Stilton #19

The Chocolate Sabotage

Thea Stilton

The Thea Sisters head to Ecuador to stop a mysterious saboteur from ruining a high-stakes competition at a famous chocol

Ages 7–10

Cover of Charlie Thorne and the Lost City

Charlie Thorne #2

Charlie Thorne and the Lost City

A cryptic code left behind by Charles Darwin pulls genius Charlie Thorne out of hiding and into a high-stakes search for

Cover of The Lost Heir

Wings of Fire #2

Tui T. Sutherland

For the child navigating complex family dynamics or searching for where they truly belong while discovering that 'home'

Cover of Through the Hidden Door

Through the Hidden Door

The discovery of an ancient underground civilization changes everything for two boys in this mystery of hidden worlds.

Cover of Hug a Tree, Geronimo

Geronimo Stilton #67

Hug a Tree, Geronimo

Elisabetta Dami

Geronimo returns to his aunt’s old farm to relive his childhood memories and unlock the legendary secrets hidden within

Cover of Flashpoint

The 39 Clues: Unstoppable #4

Siblings Amy and Dan Cahill face a terrifying race against time to stop a power-hungry billionaire from seizing control

Cover of Nightshade

Anthony Horowitz

Teen spy Alex Rider goes deep undercover to infiltrate a sinister organization called Nightshade, with the lives of thou

Cover of Alexandra

Diving for sponges to help her grandfather, Alexandra uncovers a dangerous smuggling ring hidden beneath the waves of he

Cover of The Lost Letters

Thea Stilton #21

The Lost Letters

A sudden robbery in Russia sends the Thea Sisters on a high-stakes hunt for clues, leading to a breakthrough just as the

Cover of Space Shuttle Scam

A to Z Mysteries Super Edition #12

Space Shuttle Scam

Dink, Josh, and Ruth Rose travel to Florida and stumble upon a suspicious scam involving space memorabilia at a local at

Cover of The Hawaiian Heist

Geronimo Stilton #75

The Hawaiian Heist

Elisabetta Dami

A priceless necklace has been created for a movie star in Hawaii, and Geronimo Stilton must catch the thief before they

Cover of Journal 3

Gravity Falls #3

Alex Hirsch, Rob Renzetti

Strange secrets, horrifying mysteries, and delightful confusion await within the pages of this bizarre and supernatural

Cover of White House White-Out

A to Z Mysteries Super Edition #3

White House White-Out

A Christmas trip to Washington, D.C. turns into a race against time when Dink, Josh, and Ruth Rose stumble into a plot t

Cover of The Wizard of Ooze

Goosebumps HorrorLand #17

The Wizard of Ooze

A rare comic book find turns terrifying when a villainous man who leaves oily puddles everywhere begins stalking Marco t

Cover of Chasing Redbird

Walk Two Moons #3

Chasing Redbird

While clearing an overgrown settler trail on her family's Kentucky farm, thirteen-year-old Zinny Taylors unearths secret

Cover of The Blob That Ate Everyone

The Blob That Ate Everyone

Zackie just wanted to write a scary story about a pink slime monster, but his new antique typewriter is making every ter

Cover of The Witch Herself

The Witch Saga #3

The Witch Herself

Phyllis Reynolds Naylor

Lynn and Mouse are the only ones who see through Mrs. Tuggle's charms, but they must act fast to break her sinister spel

Cover of Mayflower Treasure Hunt

A to Z Mysteries Super Edition #2

Mayflower Treasure Hunt

A Thanksgiving trip to Plymouth takes a turn for the mysterious when Dink, Josh, and Ruth Rose stumble upon a secret dat

Cover of The Rescue

Aiden and Agent Harris are in a race against time to find Meg, but the kidnappers won't let her go without a dangerous f

Cover of Witch's Sister

The Witch Saga #1

Phyllis Reynolds Naylor

Lynn is certain her sister is becoming a witch. When the kids are left alone with a mysterious neighbor, Lynn’s suspicio

Cover of War Games

Amid the 1936 Berlin Olympics, gymnast Evie Harris uncovers a Nazi plot and must choose between her gold medal dreams an

2 books in this category

More Formats for Mystery

Chapter Books(3197)Young Adult(767)Graphic Novels(229)Early Readers(68)Picture Books(46)Poetry(6)

Mystery by Age Group

Mystery Books for Ages 0–3(153)Mystery Books for Ages 12–18(5386)Mystery Books for Ages 4–7(1713)Mystery Books for Ages 8–11(4980)