Mystery Books for 9-Year-Olds - Nosy Crow Skip to content

Mystery Books for 9-Year-Olds

Get ready for a thrilling adventure with our mystery books for 9-year-olds! Solve puzzling mysteries and uncover hidden secrets in a story full of excitement and fun. These chapter books are great for more confident readers. Get ready to sharpen your sleuthing skills and enjoy an unforgettable reading experience with our captivating mystery books!

Black Hole Cinema Club

Written by Christopher Edge
9-12
Another edge-of-your-seat adventure from the award-winning author of Escape Room, Christopher Edge. A trip to the cinema will never be the same... When Lucas meets his friends at the local cinema - nicknamed 'The Black Hole' - they're excited about the movie marathon ahead. Non-stop action, blockbuster special effects and…
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Secrets of the Snakestone

Written by Piu DasGupta
9-12
In this breathtaking adventure, Zélie and Jules face a deadly race to solve a family mystery and a vicious crime that stretches from the jungles of Calcutta to the sewers of Paris. Zélie is often accused of being a witch, but she doesn't believe in magic. Until Jules climbs up…
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Alice Éclair, Spy Extraordinaire!: A Sprinkling of Danger

Written by Sarah Todd Taylor Illustrated by Beatriz Castro
9-12
Alice Éclair, Spy Extraordinaire will whisk you away on a fabulous adventure, full of daring action and delicious cakes! Baker by day, spy by night - Alice Éclair leads an exciting double life! On a glamorous movie set at the Palace of Versailles, someone is leaking national secrets. Is it…
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Friends and Traitors

Written by Helen Peters
9-12
Some secrets are just too dangerous to know... A gripping World War II story about how two girls foil an aristocratic plot to bring down the government and hand the country to the Nazis... When Sidney Dashworth's school is evacuated to a huge stately home in the countryside, she thinks…
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Murder At Snowfall

Written by Fleur Hitchcock
9-12
A gripping thriller for readers who like danger and mystery and chills and spills from the comfort of their sofas... Unputdownable. The Times and Sunday Times Children's Book of the Week. "Much more Junior Line of Duty than Junior Miss Marple" - The Sunday Times "Just the right level of…
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Wren

Written by Lucy Hope
9-12
A dark, gothic adventure set on the island of Anglesey in North Wales and featuring a very fantastical beast...   Wren lives in an ancient castle in the mountains near the sea. The wind whistles through it and the walls sing to her. Wren is busy inventing things, and her…
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Sticky Pines: The Valley of the Strange

Written by Dashe Roberts
9-12
Things are FREAKY and about to get even FREAKIER in the sleepy American town of Sticky Pines. Weirdness mounts upon creepiness to create a riotously funny potion in The Valley of the Strange, the latest explosive instalment of the cult sci-fi series for children. Lucy Sladan has made the biggest,…
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Mouse Heart

Written by Fleur Hitchcock
9-12
This atmospheric thriller, full of daring stunts and sinister villains, is perfect escapism for 9+ readers. Mouse, a foundling, loves her pieced-together family at the Moth Theatre fiercely. When their leading man, Walter, is wrongly arrested for murder, Mouse swears she'll free him. But another member of the cast has…
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Running out of Time

Written by Simon Fox
9-12
A thrilling, unputdownable debut, with extraordinary twists and incredible action, from an incredible new voice in children's fiction. I can steal time. The most I can take at the moment is fifteen seconds, which is not a lot. Grandmother took almost three minutes once and she told me she's done…
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The Mermaid Call

Written by Alex Cotter
9-12
A gripping story of myth and mystery about a legendary mermaid and her dark power. When the truth comes out, will it bring freedom or a terrible retribution? Vivien's never going to win the Mermaid Crown and she knows it. Does she care? Who wants to be rewarded just for…
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The Consequence Girl

Written by Alastair Chisholm
9-12
A thrilling, unputdownable adventure, from the highly-acclaimed author of the Waterstones Children's Book Prize-shortlisted Orion Lost and the Blackwell's Children's Book of the Year, Adam-2. The world of Colony is in ruins. No one knows what caused society to begin tearing itself apart - but the secret may lie with…
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Looking for Emily

Written by Fiona Longmuir
9-12
A hugely gripping, fast-paced mystery adventure, with brilliant twists and turns, from a fresh and exciting new voice in children's books. When twelve-year-old Lily moves to the sleepy seaside town of Edge, she's sure that nothing exciting is ever going to happen to her again. But when she stumbles upon…
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Escape Room

Written by Christopher Edge
9-12
The latest mind-blowing novel from award-winning author Christopher Edge, Escape Room is a thrilling adventure that challenges readers to think about what they've done to save the world today. When twelve-year-old Ami arrives at The Escape, she thinks it's just a game - the ultimate escape room with puzzles and…
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The Secret Detectives

Written by Ella Risbridger
9-12
A gripping, beautifully written historical mystery, from an incredible new voice in children's fiction. The body seemed to fall for a long time. There was no splash, or if there was it was lost in the waves. Isobel was frozen to the spot for a moment - and then her…
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The House on the Edge

Written by Alex Cotter
9-12
A tense thriller that's impossible to put down - perfect for fans of Emma Carroll and Fleur Hitchcock. Where has Faith's dad gone? Why has he left his family living in an old house perched on a crumbling cliff top? A crack has appeared in the cliff and Faith watches…
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Talking to the Moon

Written by S. E. Durrant
9-12
Iris's grandmother, Mimi, has started to put jam on her scrambled eggs and tie blue ribbons around her fingers to remind her of stuff. Her house, always full of things, is becoming harder and harder to navigate, and when Iris goes to stay, she feels as if a whole life…
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Twelve Minutes to Midnight

Written by Christopher Edge
9-12
Step into the past to discover a thrilling mystery about a sinister plot to shape and control the future, in this spine-tingling historical adventure from award-winning author Christopher Edge. Penelope Tredwell is the feisty thirteen-year-old orphan heiress of the bestselling magazine, The Penny Dreadful. Her masterly tales of the macabre…
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Saving Sophia

Written by Fleur Hitchcock Illustrated by Robert Ball
9-12
All Lottie wants to do is have adventures, but no such luck. Until she meets Sophia, a girl surrounded by mystery and danger. When the two run away from a staged kayak accident to find Sophia's mum, Lottie learns a lot about being the hero. No matter how many adventures…
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The Longest Night of Charlie Noon

Written by Christopher Edge
9-12
"If you go into the woods, Old Crony will get you." Secrets, spies or maybe even a monster... What lies in the heart of the wood? Charlie, Dizzy and Johnny are determined to discover the truth, but when night falls without warning they find themselves trapped in a nightmare. Lost…
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Freya’s Gold

Written by Fiona Longmuir Illustrated by Carmi Grau
9-12
Buried treasure. Hidden secrets. One golden chance. Legend says the cliffs by the seaside town of Edge are riddled with smugglers' tunnels, and that gold is stashed in their caves. Freya and her best friend, Lin, love searching for treasure on the beach, but they steer clear of the dark…
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Rose Campion and the Stolen Secret

Written by Lyn Gardner
9-12
Rose was left by her mother at the door of Campion's Palace of Variety and Wonders as a baby. It is her home, and she loves it, but she never stops wondering who she really is. When murder threatens to destroy the music hall, Rose will need all her performance…
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Shadow Fox

Written by Carlie Sorosiak
9-12
A beautiful story of loss and belonging, all told through the eyes of a wild, affectionate, prickly fox who has a love of collecting shoes and not a small amount of magic. From the bestselling author of I, Cosmo. Bee's family runs a lakeside inn, offering rest and sustenance to…
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The Black Crow Conspiracy

Written by Christopher Edge
9-12
Step into the past in this spine-tingling historical adventure from award-winning author Christopher Edge. Penelope Tredwell is the feisty thirteen-year-old orphan heiress of the bestselling magazine, The Penny Dreadful. Her masterly tales of the macabre are gripping Victorian Britain, even if no one knows she's the author. It's 1902. London…
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The Boy Who Flew

Written by Fleur Hitchcock
9-12
A vivid adventure filled with danger and heroism from the author of Murder in Midwinter. Athan Wilde dreams of flight. When his friend, Mr Chen, is murdered, Athan must rescue the flying machine they were building together and stop it falling into the wrong hands. But keeping the machine safe…
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Sticky Pines: The Thing At Black Hole Lake

Written by Dashe Roberts
9-12
The sequel to The Bigwoof Conspiracy takes us back to Sticky Pines, a small US town where weird things happen. Milo, loyal to his double-crossing, business-mogul father, has taken a trip to Black Hole Lake, leaving Lucy to continue her search into alien life and the Truth that she knows…
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