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Top 10 Best Mystery Books for 9-year-olds

From daring quests in perilous lands to spooky supernatural stories, kids will be enthralled by the tales in this list of the best mystery books for 9-year-olds. It features best-loved books by authors including Enid Blyton, David Walliams and Neil Gaiman.

1. The Famous Five

  • £24.99
  • RRP £153.78
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Enid Blyton

Join the intrepid Famous Five - Dick, Anne, Julian, George and Timmy the dog - on all of their exciting escapades, in caves, castles, secret passageways and more! The gang must outsmart thieves, hunt for hidden treasure, and unravel all sorts of mysteries in these riveting classic tales.

2. Mariella Mystery Stories

  • £4.99
  • RRP £20.96
  • Save £15.97

Kate Pankhurst

Mariella is just 9 years old, but she's already a talented super sleuth who's prepared for any mystery that comes her way. In these enthralling books, she must work out where the Bad Hair Day Fog is coming from, find out if a ghostly guinea pig is really on the loose, and figure out who's sabotaging the Puddleford Baking contest. Presented in an engaging journal style complete with fun illustrations, these exciting tales are sure to engross young readers.

3. A Series of Unfortunate Events: The Bad Beginning

  • £6.29
  • RRP £6.99
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Lemony Snicket

Following the mysterious death of their parents in a house fire, the Baudelaire children - Violet, Klaus and Sunny - are sent to live with their distant relative, Count Olaf, an eccentric actor who doesn't really care about the children, but about the family fortune they are due to inherit. Count Olaf is determined to claim this inheritance for himself, but cannot do so until Violet comes of age. The Baudelaire children set out to foil Count Olaf's efforts and unravel the mystery behind a secret society with which their parents were somehow involved. This gripping series is infused with sardonic humour.

4. The Secret Garden

  • £2.99
  • RRP £5.99
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Frances Hodgson Burnett

If you're looking for mystery, adventure, secrets and friendship, you'll find it all in this beautiful classic novel. Spoiled orphan Mary Lennox is sent to live at the isolated Misselthwaite Manor in Yorkshire - but she will discover a magical world she could never have imagined on the other side of a locked garden door. She decides to bring the neglected garden she finds there back to life, and in doing so, will change the course of her own destiny forever.

5. Demon Dentist

  • £4.99
  • RRP £12.99
  • Save £8.00

David Walliams

This book follows 12-year-old Alfie, whose teeth are horribly rotten! Throughout the town, children are putting their teeth under their pillows for the tooth fairy, but when they wake up, they don't find money, but horribly disgusting things like cat poo and earwigs. Things get stranger when the new dentist, Miss Root, starts handing out free sweets and acidic toothpaste to children. Alfie resolves to find out the truth - but what will happen when he ends up in the dentist's chair? This gruesome and hilarious story is guaranteed to delight (and horrify!) kids.

6. Roman Mysteries Stories

  • £11.99
  • RRP £69.90
  • Save £57.91

Caroline Lawrence

Children can travel back in time to the exciting, perilous world of the Romans with these thrilling fictional tales. They follow natural problem-solver Flavia Gemina and her friends, Jonathan, Nubia and Lupus, as they set forth to solve a series of perplexing mysteries.

7. The Harry Potter Series 

  • £29.99
  • RRP £62.99
  • Save £33.00

J. K. Rowling

This enchanting series features plenty of magic and mystery, guaranteed to captivate young readers. Join young Harry Potter as he enrols at the wondrous (but perilous!) Hogwarts School of Witchcraft and Wizardry. Over the years, he must contend with all sorts of fantastical beasts, a secretive Potions Master and a number of perplexing mysteries, and must ultimately face his most terrifying nemesis: Lord Voldemort.

8. Marsh Road Mysteries

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  • RRP £17.97
  • Save £12.98

Elen Caldecott

These thrilling novels are filled with friendship, fun and plenty of adventure. Guaranteed to keep kids hooked, they follow Piotr, Minnie, Andrew, Flora and Sylvia, who must try to track down a diamond thief - but what will they do when the prime suspect turns out to be Piotr's dad? Discover the truth and unravel two other mind-boggling mysteries in these fantastic tales.

9. Goosebumps Series

  • £9.99
  • RRP £49.90
  • Save £39.91

R. L. Stine

Dare your kids to read these heart-pounding books from R. L. Stine's Goosebumps series, in which children must face all sorts of supernatural terrors. These spine-chilling books are guaranteed to enthral children, featuring twisted, funny and gritty adventures. Discover ghouls, ghosts, vampires and more in these spectacularly spooky books.

10. Coraline

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  • RRP £6.99
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Neil Gaiman

This perfectly creepy and thrilling novel stars Coraline, whose family moves into a brand new flat. There, she discovers a door that leads to an unnerving mirror universe, where a mother and father with black-button eyes and papery skin beckon Coraline to join them. Whilst this strange other world seems in so many ways much better than the original, Coraline will discover that a host of children's souls are trapped there. Will she be able to save them, as well as herself?