The best crime & mystery books for kids and teens

From entertaining picture book puzzles for toddlers to murder mysteries for teens, discover our edit of the best crime and mystery books for kids.

Whether you enjoy storytime with your little ones or are choosing a book for your kids to read alone, there’s nothing like a mystery to keep the pages turning. Packed full of gripping detective stories, wacky adventures and spooky twists, we’ve shared our favourite crime and mystery books for kids, expertly tailored for every age group. 

Mystery books for 3-5-year-olds

The Detective Dog

by Julia Donaldson

Book cover for The Detective Dog

Peter’s dog Nell is no ordinary pet. Not only does she have a fantastic sense of smell, but she also loves books. When Peter arrives at school to find all their books have disappeared,  Detective Dog Nell, with help from the whole class, is ready to sniff out the thief. Perfect both to read aloud and to listen to, Julia Donaldson, author of The Gruffalo, brings us a celebration of books and reading in this mystery book for 3-5-year-olds. 

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What the Ladybird Heard

by Julia Donaldson

Book cover for What the Ladybird Heard

When Hefty Hugh and Lanky Len plot to steal the farmer’s prize cow, little do they know the tiniest, quietest creature of them all is listening in, and soon she has a plan of her own. With charming illustrations and rhyming verse perfect for reading aloud, follow the Ladybird as she sets out to save the day. Can’t get enough of the Ladybird?  Discover more of her adventures with What the Ladybird Heard Next, What the Ladybird Heard on Holiday and for festive fun, What the Ladybird Heard at Christmas. 

Mystery books for 6-8-year-olds

InvestiGators

by John Patrick Green

Book cover for InvestiGators

Who better to fight crime, go undercover and save the day than alligator secret agents, otherwise known as The InvestiGators! When chef Gustavo is kidnapped from his bakery, the InvestiGators must work together to find the culprit. Armed with just a moustache and a rolling pin, can they find Gustavo and stop the recipes from falling into the wrong hands? Covering themes of teamwork, resilience and problem-solving, this hilarious adventure is packed full of twists and turns to keep young readers engaged.

Goth Girl and the Ghost of a Mouse

by Chris Riddell

Book cover for Goth Girl and the Ghost of a Mouse

As the only child of Lord Goth, life isn’t easy for Ada. Her father believes that children shouldn’t be seen or heard and insists she wears large boots so he can always hear her coming. Instead, she spends her days alone, plodding around their enormous house, Ghastly-Gorm Hall – until William and Emily Cabbage, along with a ghostly mouse called Ishmael, come to stay. The three children begin to unravel a plot that Maltravers, the mysterious indoor gamekeeper, is hatching. Ada and her friends must work together to foil Maltravers before it's too late!

Mystery books for 9-12-year-olds

The Arctic Railway Assassin

by M. G. Leonard

Book cover for The Arctic Railway Assassin

All aboard the night train to Narvik, as we join Harrison Beck and Uncle Nat on their journey to see the northern lights for Christmas. But the trip’s hardly got started before Hal and Uncle Nat realise they’re being followed. Hal must use his powers of observation while Uncle Nat’s past comes back to haunt him as they journey into the never-ending night of the Arctic Winter. Can the railway detectives outsmart an assassin in this thrilling whodunnit? This can be enjoyed as a standalone read, or as part of the bestselling Adventures on a Train series. 

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The Orphans of St Halibut's

by Sophie Wills

Book cover for The Orphans of St Halibut's

Perfect for young readers who love spooky adventures, The Orphans of St Halibut’s is a hilarious caper from debut author Sophie Wills and bestselling illustrator, David Tazzyman. Orphans Tig, Stef, Herc and Pamela have been loving life ever since they buried their mean matron. But they need to make sure no one finds out they’re on their own. Discovering that an Inspector is on his way, they must rely on their powers of persuasion to convince him they are safe or risk being sent to the Mending House, where orphans go but never return… Can these crafty kids outsmart the adults and save their home?

Lightning Falls

by Amy Wilson

Book cover for Lightning Falls

Amy Wilson delivers a magical mystery adventure in Lightning Falls – a story of ghosts and friendship. Valerie has spent most of her life living at Lightning Falls with her family, haunting all the guests who come to stay. That is until she meets Joe, a strange boy up on the viaduct. As she follows him, she discovers a bridge beneath the river that leads to Orbis – a mysterious world that Joe claims is Valerie’s real home. But Orbis is under threat and Valerie is plunged into danger as the link between her two worlds begins to crumble. 

The Breakfast Club Adventures

by Marcus Rashford

Book cover for The Breakfast Club Adventures

Inspired by his own experiences growing up, Marcus Rashford’s exciting and mysterious adventure is packed with fun-filled friendships, fantastical creatures and incredible investigations. When Marcus kicks his football over the school fence, he fears it’s lost forever. Then, he gets an invite to join the Breakfast Club Investigators and together with friends Stacey, Lise and Asim, he is determined to find out what lies on the other side of the fence – and get his football back, of course!

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Kat Wolfe Investigates

by Lauren St John

Book cover for Kat Wolfe Investigates

Perfect for animal lovers, Kate Wolfe Investigates is the first adventure in Lauren St John’s middle-grade mystery series. After Kat Wolfe moves to Bluebell Bay and starts pet-sitting for pocket money, she discovers this idyllic town is not quite all that it seems. After a pet owner disappears from a clifftop mansion, Kat turns to her new friend, Harper Lamb, for help. But soon their mission turns deadly and Wolfe and Lamb are fighting for their lives. Will their unruly animals save the day?

Crime and mystery books for teens

Promise Boys

by Nick Brooks

Book cover for Promise Boys

This trailblazing, blockbuster YA mystery follows students J.B., Ramón and Trey, three boys of colour, who must investigate their principal’s murder to clear their own names. For years, the pupils have been following the Principal Moore Method at the Urban Promise Prep School, where students are forced to follow strict rules in an attempt to help them avoid the fates of many men in their neighbourhood. But when Moore is murdered, the trio emerge as the case’s prime suspects. To prove their innocence they band together to track down the real killer.But is the true culprit hiding among them?

The Headmaster's List

by Melissa de la Cruz

Book cover for The Headmaster's List

In Melissa del la Cruz’s first YA thriller four Los Angeles prep students find themselves at the centre of a fatal car crash and go to extreme lengths to bury the truth. But Argyle Prep is full of questions about the crash and determined to find the answers. Set in the glitz and glamour of an elite LA private school, a place ruled by pedigree and privilege, nothing is simple. Perfect for young adult crime thriller fans, The Headmaster’s List is a page-turning and addictive whodunnit.