47 Best Middle-Grade Mysteries to Read

The best middle-grade mysteries to me are those that have more than just a mystery as the plot. But, I have to admit, many great middle-grade mystery books are also just about the mystery (at least it’s the central plot) — and that’s fine too. For today’s list, I’ve included the best middle-grade mysteries as well as a sprinkling of early readers (chapter books) aimed at younger readers. I’ve marked which ones are part of a series, so if your kids enjoy series, you can get your hands on those picks.

You’ll also find that some of these books have a rich complex plot entirely rewarding on its own — with the mystery as an additional delightful component.

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Best Middle-Grade Mysteries

middle-grade mysteries

The Amelia Six

Middle Grade Mystery Books

Eleven-year-old Amelia Ashford—Millie to her friends (if she had any, that is)—doesn’t realize just how much adventure awaits her when she’s given the opportunity of a lifetime: to spend the night in Amelia Earhart’s childhood home with five other girls. Make that five strangers. But Millie’s mom is a pilot like the famous Amelia, and Millie would love to have something to write to her about…if only she had her address.

Once at Amelia’s house in Atchison, Kansas, Millie stumbles upon a display of Amelia’s famous flight goggles. She can’t believe her good luck, since they’re about to be relocated to a fancy museum in Washington, DC. But her luck changes quickly when the goggles disappear, and Millie was the last to see them. Soon, fingers are pointing in all directions, and someone falls strangely ill. Suddenly, a fun night of scavenger hunts and sweets takes a nosedive and the girls aren’t sure who to trust. With a blizzard raging outside and a house full of suspects, the girls have no choice but to band together. It’s up to the Amelia Six to find the culprit and return the goggles to their rightful place. Or the next body to collapse could be one of theirs.


Finally, Something Mysterious

best middle-grade mysteries

Paul Marconi has always thought that Bellwood was a strange town, but also a boring one. Not much for an eleven-year-old to do. Fires are burning nearby, Paul’s parents are obsessed with winning a bratwurst contest, and his best friend, one of the founding members of their only-child detective club, the One and Onlys, is about to acquire a younger sister, sort of undoing their whole reason for existing. But then! Hundreds of rubber duckies have appeared on the lawn of poor Mr. Babbage without any explanation. Finally! There is something that Paul and his friends can actually investigate.

In the face of all these bizarre occurrences, Paul is convinced that uncovering who deposited the duckies will finally bring some sense to what has become an upside-down world. Soon the three friends have a long list of suspects, all with their own motives, but no clear culprit. When everything comes to a head at the town’s annual Bellwood Bratwurst Bonanza, Paul discovers that some things don’t have an easy explanation and not every mystery can be solved.

A perfect summer story about friends, amateur sleuthing, and a whole lot of rubber duckies.


Murder at Midnight

best middle-grade mysteries

A plot to overthrow King Claudio is brewing in the Kingdom of Pergamontio.
Scholarly Mangus the magician-along with his street–smart and faithful new servant boy, Fabrizio–have been marked as easy scapegoats for the traitor lurking within the king’s court. Together, these two unlikely partners must gather clues to solve the mystery and prove their innocence before the stroke of midnight…or face death!


From the Desk of Zoe Washington

best middle-grade mysteries

Zoe Washington isn’t sure what to write. What does a girl say to the father she’s never met, hadn’t heard from until his letter arrived on her twelfth birthday, and who’s been in prison for a terrible crime?

A crime he says he never committed.

Could Marcus really be innocent? Zoe is determined to uncover the truth. Even if it means hiding his letters and her investigation from the rest of her family. Everyone else thinks Zoe’s worrying about doing a good job at her bakery internship and proving to her parents that she’s worthy of auditioning for Food Network’s Kids Bake Challenge.

But with bakery confections on one part of her mind, and Marcus’s conviction weighing heavily on the other, this is one recipe Zoe doesn’t know how to balance. The only thing she knows to be true: Everyone lies.


The Parker Inheritance

best middle-grade mystery books

When Candice finds a letter in an old attic in Lambert, South Carolina, she isn’t sure she should read it. It’s addressed to her grandmother, who left the town in shame. But the letter describes a young woman. An injustice that happened decades ago. A mystery enfolding its writer. And the fortune that awaits the person who solves the puzzle.

So with the help of Brandon, the quiet boy across the street, she begins to decipher the clues. The challenge will lead them deep into Lambert’s history, full of ugly deeds, forgotten heroes, and one great love; and deeper into their own families, with their own unspoken secrets. Can they find the fortune and fulfill the letter’s promise before the answers slip into the past yet again?


The Harlem Charade

middle grade mysteries

WATCHER. SHADOW. FUGITIVE.

Harlem is home to all kinds of kids. Jin sees life passing her by from the window of her family’s bodega. Alex wants to help the needy one shelter at a time, but can’t tell anyone who she really is. Elvin’s living on Harlem’s cold, lonely streets, surviving on his own after his grandfather was mysteriously attacked.

When these three strangers join forces to find out what happened to Elvin’s grandfather, their digging leads them to an enigmatic artist whose missing masterpieces are worth a fortune — one that might save the neighborhood from development by an ambitious politician who wants to turn it into Harlem World, a ludicrous historic theme park. But if they don’t find the paintings soon, nothing in their beloved neighborhood will ever be the same…

In this remarkable tale of daring and danger, debut novelist Natasha Tarpley explores the way a community defines itself, the power of art to show truth, and what it really means to be home.


Me, Frida, and the Secret of the Peacock Ring

middle grade mystery books

A room locked for 50 years.

A valuable peacock ring.

A mysterious brother-sister duo.

Paloma Marquez is traveling to Mexico City, birthplace of her deceased father, for the very first time. She’s hoping that spending time in Mexico will help her unlock memories of the too-brief time they spent together.

While in Mexico, Paloma meets Lizzie and Gael, who present her with an irresistible challenge: The siblings want her to help them find a valuable ring that once belonged to beloved Mexican artist Frida Kahlo. Finding the ring means a big reward — and the thanks of all Mexico. What better way to honor her father than returning a priceless piece of jewelry that once belonged to his favorite artist!


The Newspaper Club

best middle-grade mysteries

Nellie Murrow — the daughter of two (former) newspaper reporters — was named after one of the fiercest journalists who ever lived. When she moves to sleepy Bear Creek, Maine, rumors of vandalism and attacks at the only park in town are keeping her saddled to the house.

Some townspeople say the attacks are gang recruitments. Others blame a vagrant spotted on the hiking trails around town. But when Nellie thinks like a reporter, none of those explanations make sense. Something is happening at the park, but what? All of the fake online news and rumors are clouding the truth.

Nellie wants to break the story — and break free from the front yard — but she can’t do it alone. She needs a whole club if she’s going to start the Cub Report, the town’s first independent newspaper. Creating a newspaper from scratch is going to be tough; but for Nellie, making friends is even harder.


Greenglass House (Series)

best middle-grade mystery books

It’s wintertime at Greenglass House. The creaky smuggler’s inn is always quiet during this season, and twelve-year-old Milo, the innkeepers’ adopted son, plans to spend his holidays relaxing. But on the first icy night of vacation, out of nowhere, the guest bell rings. Then rings again. And again. Soon Milo’s home is bursting with odd, secretive guests, each one bearing a strange story that is somehow connected to the rambling old house. As objects go missing and tempers flare, Milo and Meddy, the cook’s daughter, must decipher clues and untangle the web of deepening mysteries to discover the truth about Greenglass House—and themselves.


One Came Home

In the town of Placid, Wisconsin, in 1871, Georgie Burkhardt is known for two things: her uncanny aim with a rifle and her habit of speaking her mind plainly.

But when Georgie blurts out something she shouldn’t, her older sister Agatha flees, running off with a pack of “pigeoners” trailing the passenger pigeon migration. And when the sheriff returns to town with an unidentifiable body—wearing Agatha’s blue-green ball gown—everyone assumes the worst. Except Georgie. Refusing to believe the facts that are laid down (and coffined) before her, Georgie sets out on a journey to find her sister. She will track every last clue and shred of evidence to bring Agatha home. Yet even with resolute determination and her trusty Springfield single-shot, Georgie is not prepared for what she faces on the western frontier.


The London Eye Mystery (Series)

Ted and Kat watched their cousin Salim board the London Eye. But after half an hour it landed and everyone trooped off–except Salim. Where could he have gone? How on earth could he have disappeared into thin air? Ted and his older sister, Kat, become sleuthing partners, since the police are having no luck. Despite their prickly relationship, they overcome their differences to follow a trail of clues across London in a desperate bid to find their cousin. And ultimately it comes down to Ted, whose brain works in its own very unique way, to find the key to the mystery. This is an unput-downable spine-tingling thriller–a race against time.


Goldie Vance (Series)

Move over Nancy, Harriet, & Veronica. There’s a new sleuth on the block!

Sixteen-year-old Marigold “Goldie” Vance lives at a Florida resort with her dad, who manages the place. Her mom, who divorced her dad years ago, works as a live mermaid at a club downtown. Goldie has an insatiable curiosity, which explains her dream to one day become the hotel’s in-house detective. When Charles, the current detective, encounters a case he can’t crack, he agrees to mentor Goldie in exchange for her help solving the mystery.


Hold Fast

Where is Early’s father? He’s not the kind of father who would disappear. But he’s gone . . . and he’s left a whole lot of trouble behind.

As danger closes in, Early, her mom, and her brother have to flee their apartment. With nowhere else to go, they are forced to move into a city shelter. Once there, Early starts asking questions and looking for answers. Because her father hasn’t disappeared without a trace. There are patterns and rhythms to what’s happened, and Early might be the only one who can use them to track him down and make her way out of a very tough place.

With her signature, singular love of language and sense of mystery, Blue Balliett weaves a story that takes readers from the cold, snowy Chicago streets to the darkest corner of the public library, on an unforgettable hunt for deep truths and a reunited family.


Agatha Oddly (Series)

Meet thirteen-year-old Agatha Oddly – a bold, determined heroine, and the star of a stylish new detective series.

Agatha Oddlow has been a detective for as long as she can remember – she’s just been waiting for her first big case. And nothing gets bigger than saving the City of London from some strange goings-on.

With a scholarship to the prestigious St Regis School, a cottage in the middle of Hyde Park, a room full of beloved sleuthing novels, and a secret key that gives her access to a whole hidden side of London, Agatha is perfectly poised to solve the mystery of what’s going on. But just who can she trust when no one is quite who they seem…


The Mysterious Benedict Society (Series)

best middle-grade mystery books

“Are you a gifted child looking for special opportunities?” Dozens of children respond to this peculiar ad in the newspaper and are then put through a series of mind-bending tests, which readers take along with them. Only four children–two boys and two girls–succeed. Their challenge: to go on a secret mission that only the most intelligent and inventive children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules. But what they’ll find in the hidden underground tunnels of the school is more than your average school supplies. So, if you’re gifted, creative, or happen to know Morse Code, they could probably use your help.


The Case of the Haunted History Museum (Museum Mysteries Series)

best middle-grade mystery books

Capitol City’s Natural History Museum is haunted – or at least that’s what someone wants people to think. But Wilson Kipper, son of the museum’s head paleontologist, knows better. When the mysterious occurrences go from spooky to dangerous, the museum is forced to close its doors. Can Wilson and his friends get to the bottom of things, or will the Natural History Museum be closed for good?


When You Reach Me

middle grade mystery books


Shortly after a fall-out with her best friend, sixth grader Miranda starts receiving mysterious notes, and she doesn’t know what to do. The notes tell her that she must write a letter—a true story, and that she can’t share her mission with anyone.
 
It would be easy to ignore the strange messages, except that whoever is leaving them has an uncanny ability to predict the future. If that is the case, then Miranda has a big problem—because the notes tell her that someone is going to die, and she might be too late to stop it.


Three Times Lucky

best middle-grade mysteries

Rising sixth grader Miss Moses LoBeau lives in the small town of Tupelo Landing, NC, where everyone’s business is fair game and no secret is sacred. She washed ashore in a hurricane eleven years ago, and she’s been making waves ever since. Although Mo hopes someday to find her “upstream mother,” she’s found a home with the Colonel–a café owner with a forgotten past of his own–and Miss Lana, the fabulous café hostess. She will protect those she loves with every bit of her strong will and tough attitude. So when a lawman comes to town asking about a murder, Mo and her best friend, Dale Earnhardt Johnson III, set out to uncover the truth in hopes of saving the only family Mo has ever known


Escape from Mr. Lemoncello’s Library (Series)


When Kyle learns that the world’s most famous game maker, Luigi Lemoncello, has designed the town’s new library and is having an invitation-only lock-in on opening night, he’s determined to be there! But the tricky part isn’t getting into the library—it’s getting out. Because when morning comes, the doors stay locked. Kyle and the other kids must solve every clue and figure out every secret puzzle to find the hidden escape route! 


The Westing Game

best middle-grade mystery books

A bizarre chain of events begins when sixteen unlikely people gather for the reading of Samuel W. Westing’s will. And though no one knows why the eccentric, game-loving millionaire has chosen a virtual stranger—and a possible murderer—to inherit his vast fortune, on things for sure: Sam Westing may be dead…but that won’t stop him from playing one last game!


Summerlost

best middle-grade mystery books

It’s the first real summer since the accident that killed Cedar’s father and younger brother, Ben. Cedar and what’s left of her family are returning to the town of Iron Creek for the summer. They’re just settling into their new house when a boy named Leo, dressed in costume, rides by on his bike. Intrigued, Cedar follows him to the renowned Summerlost theatre festival. Soon, she not only has a new friend in Leo and a job working concessions at the festival, she finds herself surrounded by mystery. The mystery of the tragic, too-short life of the Hollywood actress who haunts the halls of Summerlost. And the mystery of the strange gifts that keep appearing for Cedar. 


Holes

best middle-grade mysteries

Stanley Yelnats is under a curse. A curse that began with his no-good-dirty-rotten-pig-stealing-great-great-grandfather and has since followed generations of Yelnatses. Now Stanley has been unjustly sent to a boys’ detention center, Camp Green Lake, where the boys build character by spending all day, every day digging holes exactly five feet wide and five feet deep. There is no lake at Camp Green Lake. But there are an awful lot of holes.

It doesn’t take long for Stanley to realize there’s more than character improvement going on at Camp Green Lake. The boys are digging holes because the warden is looking for something. But what could be buried under a dried-up lake? Stanley tries to dig up the truth in this inventive and darkly humorous tale of crime and punishment—and redemption.

Related: 77 Best Middle-Grade Books for Boys


Murder Is Bad Manners

best middle-grade mystery books

Daisy Wells and Hazel Wong are best friends at Deepdean School for Girls, and they both have a penchant for solving mysteries. In fact, outspoken Daisy is a self-described Sherlock Holmes, and she appoints wallflower Hazel as her own personal Watson when they form their own (secret!) detective agency. The only problem? They have nothing to investigate.

But that changes once Hazel discovers the body of their science teacher, Miss Bell—and the body subsequently disappears. She and Daisy are certain a murder must have taken place, and they can think of more than one person with a motive.

Determined to get to the bottom of the crime—and to prove that it happened—before the killer strikes again, Hazel and Daisy must hunt for evidence, spy on their suspects, and use all the cunning, scheming, and intuition they can muster. But will they succeed? And can their friendship stand the test?


The Emperor’s Riddle

best middle-grade mysteries

Mia Chen is on what her mother calls a Grand Adventure. She’s not sure what to make of this family trip to China, and didn’t want to leave her friends for the summer, but she’s excited about the prospect of exploring with her Aunt Lin, the only adult who truly understands her.

Then Aunt Lin disappears, right after her old nemesis, a man named Ying, comes to visit. Mia knows that years ago, when Aunt Lin and Ying were sent to the Fuzhou countryside to work as laborers, the two searched for an ancient treasure together—one that still hasn’t been found. She’s suspicious that their shared history might be linked to Aunt Lin’s disappearance.

When Mia discovers an old map filled with riddles in Aunt Lin’s room, she quickly pieces together her mission: find the treasure, find her aunt. Now, Mia, along with her big brother, Jake, must solve the clues to rescue the person she knows best in the world—and maybe unearth a treasure greater than her wildest dreams.


The Great Greene Heist (Series)

best middle-grade mysteries

Jackson Greene swears he’s given up scheming. Then school bully Keith Sinclair announces he’s running for Student Council president, against Jackson’s former friend Gaby de la Cruz. Gaby wants Jackson to stay out of it — but he knows Keith has “connections” to the principal, which could win him the presidency no matter the vote count.

So Jackson assembles a crack team: Hashemi Larijani, tech genius. Victor Cho, bankroll. Megan Feldman, science goddess. Charlie de la Cruz, reporter. Together they devise a plan that will take down Keith, win Gaby’s respect, and make sure the election is done right. If they can pull it off, it will be remembered as the school’s greatest con ever — one worthy of the name THE GREAT GREENE HEIST.


The Book Scavenger (Series)

For twelve-year-old Emily, the best thing about moving to San Francisco is that it’s the home city of her literary idol: Garrison Griswold, book publisher and creator of the online sensation Book Scavenger (a game where books are hidden in cities all over the country and clues to find them are revealed through puzzles). Upon her arrival, however, Emily learns that Griswold has been attacked and is now in a coma, and no one knows anything about the epic new game he had been poised to launch. Then Emily and her new friend James discover an odd book, which they come to believe is from Griswold himself, and might contain the only copy of his mysterious new game.

Racing against time, Emily and James rush from clue to clue, desperate to figure out the secret at the heart of Griswold’s new game―before those who attacked Griswold come after them too.


FRAMED: A T.O.A.S.T Mystery (Series)

Get to know the only kid on the FBI Director’s speed dial and several international criminals’ most wanted lists all because of his Theory of All Small Things in this hilarious start to a brand-new middle grade mystery series.

So you’re only halfway through your homework and the Director of the FBI keeps texting you for help…What do you do? Save your grade? Or save the country?

If you’re Florian Bates, you figure out a way to do both.

Florian is twelve years old and has just moved to Washington. He’s learning his way around using TOAST, which stands for the Theory of All Small Things. It’s a technique he invented to solve life’s little mysteries such as: where to sit on the on the first day of school, or which Chinese restaurant has the best eggrolls.

But when he teaches it to his new friend Margaret, they uncover a mystery that isn’t little. In fact, it’s HUGE, and it involves the National Gallery, the FBI, and a notorious crime syndicate known as EEL.

Can Florian decipher the clues and finish his homework in time to help the FBI solve the case?


OCDaniel

best middle-grade mystery books

Daniel is the back-up punter for the Erie Hills Elephants. Which really means he’s the water boy. He spends football practice perfectly arranging water cups—and hoping no one notices. Actually, he spends most of his time hoping no one notices his strange habits—he calls them Zaps: avoiding writing the number four, for example, or flipping a light switch on and off dozens of times over. He hopes no one notices that he’s crazy, especially his best friend Max, and Raya, the prettiest girl in school. His life gets weirder when another girl at school, who is unkindly nicknamed Psycho Sara, notices him for the first time. She doesn’t just notice him: she seems to peer through him.

Then Daniel gets a note: “I need your help,” it says, signed, Fellow Star Child—whatever that means. And suddenly Daniel, a total no one at school, is swept up in a mystery that might change everything for him.


All the Greys on Greene Street

SoHo, 1981. Twelve-year-old Olympia is an artist–and in her neighborhood, that’s normal. Her dad and his business partner Apollo bring antique paintings back to life, while her mother makes intricate sculptures in a corner of their loft, leaving Ollie to roam the streets of New York with her best friends Richard and Alex, drawing everything that catches her eye. Then everything falls apart. Ollie’s dad disappears in the middle of the night, leaving her only a cryptic note and instructions to destroy it. Her mom has gone to bed, and she’s not getting up. Apollo is hiding something, Alex is acting strange, and Richard has questions about the mysterious stranger he saw outside. And someone keeps calling, looking for a missing piece of art. . . Olympia knows her dad is the key–but first, she has to find him, and time is running out.

Related: 41 Best Middle-Grade Historical Fiction Books


Footer Davis Probably Is Crazy

best middle-grade mysteries

Footer Davis is on the case when two kids go missing after a fire in this humorously honest novel that is full of Southern style.

Here are some things that are true about Footer Davis:
1. She has a BB gun named Louise.
2. Walruses freak her out.
3. Her mom has bipolar disorder.

But she wants you to know that it’s not that big a deal. She’s just Mom, and usually she’s fine except sometimes when she doesn’t take her pills. But right now what’s most important to Footer is what happened to those kids at the Abrams farm. See, there was a fire there a few nights ago, and those kids haven’t been seen since. Pretty sure they got burned up. What Footer and Peavine—that’s her best friend—want to know is who started the fire?


From the Mixed-Up Files of Mrs. Basil E. Frankweiler

best middle-grade mystery books

In this winner of the Newbery Medal from E.L. Konigsburg, when suburban Claudia Kincaid decides to run away, she knows she doesn’t just want to run from somewhere, she wants to run to somewhere—to a place that is comfortable, beautiful, and, preferably, elegant.

Claudia knew that she could never pull off the old-fashioned kind of running away…so she decided not to run FROM somewhere, but TO somewhere. And so, after some careful planning, she and her younger brother, Jamie, escaped — right into a mystery that made headlines!


Liar and Spy

best middle-grade mystery books

The first day Georges (the S is silent) moves into a new Brooklyn apartment, he sees a sign taped to a door in the basement: SPY CLUB MEETING—TODAY!
 
That’s how he meets his twelve-year-old neigh­bor Safer. He and Georges quickly become allies—and fellow spies. Their assignment? Tracking the mysterious Mr. X, who lives in the apartment upstairs. But as Safer’s requests become more and more demanding, Georges starts to wonder: how far is too far to go for your only friend?
 


The Strangers (Greystone Secrets Series)

What makes you you?

The Greystone kids thought they knew. Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best—acting silly and being adored. They’ve been a happy family, just the three of them and their mom.

But everything changes when reports of three kidnapped children reach the Greystone kids, and they’re shocked by the startling similarities between themselves and these complete strangers. The other kids share their same first and middle names. They’re the same ages. They even have identical birthdays. Who, exactly, are these strangers?

Before Chess, Emma, and Finn can question their mom about it, she takes off on a sudden work trip and leaves them in the care of Ms. Morales and her daughter, Natalie. But puzzling clues left behind lead to complex codes, hidden rooms, and a dangerous secret that will turn their world upside down.


Murder Most Unladylike: A Wells & Wong Mystery

best middle-grade mysteries

Daisy and Hazel are finally back at Deepdean, and the school is preparing for a most exciting event: the fiftieth Anniversary.

Plans for a weekend of celebrations are in full swing. But all is not well, for in the detectives’ long absence, Deepdean has changed. Daisy has lost her crown to a fascinating new girl – and many of the Detective Society’s old allies are now their sworn enemies.

Then the girls witness a shocking incident in the woods close by – a crime that they’re sure is linked to the Anniversary. As parents descend upon Deepdean, decades-old grudges, rivalries and secrets begin to surface, and soon Deepdean’s future is at stake.

Can the girls solve the case – and save their home?


Chirp

best middle-grade mystery books

When Mia moves to Vermont the summer after seventh grade, she’s recovering from the broken arm she got falling off a balance beam. And packed away in the moving boxes under her clothes and gymnastics trophies is a secret she’d rather forget.

Mia’s change in scenery brings day camp, new friends, and time with her beloved grandmother. But Gram is convinced someone is trying to destroy her cricket farm. Is it sabotage or is Gram’s thinking impaired from the stroke she suffered months ago? Mia and her friends set out to investigate, but can they uncover the truth in time to save Gram’s farm? And will that discovery empower Mia to confront the secret she’s been hiding–and find the courage she never knew she had?

In a compelling story rich with friendship, science, and summer fun, a girl finds her voice while navigating the joys and challenges of growing up.


Lemons

Lemons

Lemonade Liberty Witt’s mama always told her: When life gives you lemons, make lemonade. But Lem can’t possibly make lemonade out of her new life in Willow Creek, California—the Bigfoot Capital of the World—where she’s forced to live with a grandfather she’s never met after her mother passes away.
 
Then she meets eleven-year-old Tobin Sky, the CEO of Bigfoot Detectives Inc., who is the sole Bigfoot investigator for their small town. After he invites Lem to be his assistant for the summer, they set out on an epic adventure to capture a shot of the elusive beast on film. But along the way, Lem and Tobin end up discovering more than they ever could have imagined. And Lem realizes that maybe she can make lemonade out of her new life after all.


The Goldfish Boy

best middle-grade mystery books - the goldfish boy

Matthew Corbin suffers from severe obsessive-compulsive disorder. He hasn’t been to school in weeks. His hands are cracked and bleeding from cleaning. He refuses to leave his bedroom. To pass the time, he observes his neighbors from his bedroom window, making mundane notes about their habits as they bustle about the cul-de-sac.

When a toddler staying next door goes missing, it becomes apparent that Matthew was the last person to see him alive. Suddenly, Matthew finds himself at the center of a high-stakes mystery, and every one of his neighbors is a suspect. Matthew is the key to figuring out what happened and potentially saving a child’s life… but is he able to do so if it means exposing his own secrets, and stepping out from the safety of his home?


The Elephant’s Girl

The elephant's girl - best middle-grade mystery books

An elephant never forgets, but Lexington Willow can’t remember what happened before a tornado swept her away when she was a toddler. All she knows is that it landed her near an enclosure in a Nebraska zoo; and there an elephant named Nyah protected her from the storm. With no trace of her birth family, Lex grew up at the zoo with Nyah and her elephant family; her foster father, Roger; her best friend, Fisher; and the wind whispering in her ear.

Now that she’s twelve, Lex is finally old enough to help with the elephants. But during their first training session, Nyah sends her a telepathic image of the woods outside the zoo. Despite the wind’s protests, Lex decides to investigate Nyah’s message and gets wrapped up in an adventure involving ghosts, lost treasure, and a puzzle that might be the key to finding her family. As she hunts for answers, Lex must summon the courage to leave the secure borders of her zoo to discover who she really is–and why the tornado brought her here all those years ago.


Tornado Brain

Tornado Brain - best middle-grade mysteries

hings never seem to go as easily for thirteen-year-old Frankie as they do for her sister, Tess. Unlike Tess, Frankie is neurodivergent. In her case, that means she can’t stand to be touched, loud noises bother her, she’s easily distracted, she hates changes in her routine, and she has to go see a therapist while other kids get to hang out at the beach. It also means Frankie has trouble making friends. She did have one–Colette–but they’re not friends anymore. It’s complicated.

Then, just weeks before the end of seventh grade, Colette unexpectedly shows up at Frankie’s door. The next morning, Colette vanishes. Now, after losing Colette yet again, Frankie’s convinced that her former best friend left clues behind that only she can decipher, so she persuades her reluctant sister to help her unravel the mystery of Colette’s disappearance before it’s too late.

A powerful story of friendship, sisters, and forgiveness, Tornado Brain is an achingly honest portrait of a young girl trying to find space to be herself.


Kate the Chemist – Dragons vs Unicorns (Chapter Book Series)

best middle-grade mysteries

Kate the Chemist is a ten-year-old science problem solver. There’s no problem Kate can’t fix! When her best friend, Birdie, is cast as the lead unicorn in their school’s musical Dragons vs. Unicorns, and Kate is chosen to be the assistant director, they agree this is going to be the best musical EVER! Kate is a natural assistant director; like all good scientists, she’s smart and organized, but she also comes up with great ideas. But when everything starts going wrong with the musical and Kate realizes someone is sabotaging the show, will her special science sleuthing skills help save the day–and the show?


Izzy Newton and the S.M.A.R.T. Squad: Absolute Hero (Series)

best middle-grade mystery books

Science reigns supreme with this squad of young brainiacs. Join Izzy Newton and her friends in the first adventure of this fun new middle-grade fiction series from National Geographic Kids.

A crowded new school and a crazy class schedule is enough to make Izzy feel dizzy. It may be the first day of middle school, but as long as her best friends Allie Einstein and Charlie Darwin are by her side, Izzy knows it’ll all be okay. However, first-day jitters take an icy turn when Izzy’s old pal Marie Curie comes back to town. Instead of a warm welcome, Marie gives her former pal the cold shoulder. The problems pile up when the school’s air-conditioning goes on the fritz and the temperature suddenly drops to near freezing. The adults don’t seem to have a clue how to thaw out the school. Cold temperatures and a frigid friendship? Izzy has had enough of feeling like an absolute zero. She rallies the girls to use their brainpower and science smarts to tackle the school’s chilly mystery … and hopefully to fix a certain frozen friendship along the way. Will the girls succeed and become the heroes of Atom Middle School?


King of Murder – Betsy Byars

best middle-grade mystery books

Together with her best friend and reluctant sidekick, Meat, Herculeah Jones meets a famous mystery author, Mathias King, aka the Murder King. King’s novels mirror gruesome, real-life murders, particularly A Slash of Life, which is about an unsolved local stabbing. Some people believe Mathias King isn’t making up the details, could he actually be responsible for the crime? Herculeah’s sure she can find out. But Meat seems too busy with his new girlfriend to give Herculeah much of a hand. Can Herculeah solve this mystery on her own, or will Meat’s dating be this sleuth’s downfall?


The Truth As Told By Mason Buttle

best middle-grade mystery books

Mason Buttle is the biggest, sweatiest kid in his grade, and everyone knows he can barely read or write. Mason’s learning disabilities are compounded by grief. Fifteen months ago, Mason’s best friend, Benny Kilmartin, turned up dead in the Buttle family’s orchard.

An investigation drags on, and Mason, honest as the day is long, can’t understand why Lieutenant Baird won’t believe the story Mason has told about that day.

Both Mason and his new friend, tiny Calvin Chumsky, are relentlessly bullied by the other boys in their neighborhood, so they create an underground haven for themselves. When Calvin goes missing, Mason finds himself in trouble again. He’s desperate to figure out what happened to Calvin and, eventually, Benny.

But will anyone believe him?


Partners in Crime (Sleuth or Dare Series)

best middle-grade mysteries

Whodunit?

When best friends Darcy and Norah have to create a fake business for a school assignment, they come up with a great idea: a detective agency! Darcy loves mysteries, and Norah likes helping people, so it’s a perfect fit.

But then their pretend agency gets a real case. Someone is missing, and it’s up to Darcy and Norah to take on the search. Unfortunately, there’s someone else out there who doesn’t want the two detectives stirring up any trouble. . . .

With the help of hidden clues, spy gadgets, and trusted friends, can Darcy and Norah crack the case in time?


High-rise Mystery

best middle-grade mystery books

The detective duo everyone is dying to meet! Summer in London is hot, the hottest on record, and there’s been a murder in THE TRI: the high-rise home to resident know-it-alls, Nik and Norva. Who better to solve the case? Armed with curiosity, home-turf knowledge and unlimited time – until the end of the summer holidays anyway. The first whodunnit in a new mystery series by Sharna Jackson.


Nikki Tesla and the Ferret-Proof Death Ray

“Let the official record show that, I, Nikki Tesla, did not intend to destroy the world.”

There are only so many times a kid can invent an instrument of global destruction without getting grounded. So when Nikki’s death ray accidentally blows up her bedroom (if you can call a pet ferret with an itchy trigger finger an accident), she’s sent to the only place that can handle her. Genius Academy is a school for history’s greatest brains. Leo da Vinci? Charlotte Darwin? Bert Einstein? All extraordinary. Yet even among her fellow prodigies, Nikki feels like an outsider thanks to a terrible secret she can’t let anyone discover. Ever.

But when her death ray is stolen, Nikki must stop worrying about fitting in and learn to play nice with her new classmates. Because it doesn’t take a genius to track a thief around the world, outwit the authorities, and keep a French fry-fanatic ferret happy. It takes all of them.


Absolutely Truly

best middle-grade mystery books

Now that Truly Lovejoy’s father has been injured by an IED in Afghanistan and is having trouble finding work back home, the family moves from Texas to tiny Pumpkin Falls, New Hampshire, to take over Lovejoy’s Books, a struggling bookstore that’s been in the family for one hundred years.

With two older brothers and two younger sisters clamoring for attention, her mother back in school, and everyone up to their eyebrows trying to keep Lovejoy’s Books afloat, Truly feels more overlooked than usual. So she pours herself into uncovering the mystery of an undelivered letter she finds stuck in a valuable autographed first edition of Charlotte’s Web, which subsequently goes missing from the bookshop. What’s inside the envelope leads Truly and her new Pumpkin Falls friends on a madcap treasure hunt around town, chasing clues that could spell danger.


There they are: 47 best middle-grade mysteries for you! If you enjoy middle-grade mysteries, I’m confident that you’ll find a few new (or old) favorites on this list.

Have you read any of these middle-grade mystery books? Which ones did you love? Which middle-grade mysteries not on this list would you also recommend? I’d love to know!

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best middle-grade mysteries
best middle-grade mystery books
best middle-grade mystery books

3 thoughts on “47 Best Middle-Grade Mysteries to Read

  1. I have read a few of these, have a few on my TBR list, and added some more to my list. I do love a good mystery and some of these sound great. Thanks for a fun post.

  2. This blog is fantastic! I’m looking for comp titles for a middle grade detective novel I wrote, and I came across your recommendations. I’m wondering if you might be willing to help me find some comps for my story and also might be interested in editing for me. You can reach me at

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