Girls' detective stories for children aged 9 to 10

We offer exciting stories of little investigators for children aged 9 to 10. Our stories feature little boy detectives who solve mysteries and investigate intriguing cases. All our stories are available for free online reading. Discover our thrilling adventures for young aspiring detectives now!

Stories of little investigators: boys (20)

Age:

A warm bakery interior where a focused, smiling 10-year-old boy with tousled brown hair, wearing a light blue jacket and khaki pants, crouches at the counter inspecting a small trail of muffin crumbs with a round magnifying glass; Nia, about 9, with braided black hair and a red scarf, shyly shows a jam-stained little finger; Mrs. Green, about 60, gray hair in a bun and a floral apron, stands behind the light wood counter relieved, a "Fresh muffins" box in front of her; Mr. Hobbs, about 75, slight build in a blue jacket with a jam spot on the cuff, holds an empty plate apologetically; Tom, about 17, flour-dusted jeans, sweeps near the door watching awkwardly; glass display with remaining muffins, shelves of golden bread, soft morning light through a large window and a small round "Fresh muffins at nine" poster; calm, friendly resolution as the boy-detective examines crumbs, flour traces and jam stains — colorful ink illustration with clean lines, warm colors and soft paper textures suitable for children.

The Three-Minute Muffin

Reading 13 min. (3) 9-10 years old Available in audio story

When a blueberry muffin goes missing from Mrs. Green’s bakery, young Liam uses careful observation, timing clues, and gentle questioning to investigate the mystery in his neighborhood.

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A 10-year-old boy with a round freckled face and tousled light brown hair, determined and relieved smile, wearing a striped blue T-shirt and jeans, crouches and gently pushes a stone to free a small brown-spotted puppy; behind him stands a ~9-year-old girl (Mia) with black hair in a ponytail, excited and encouraging, holding an orange flashlight that illuminates the scene, while an ~8-year-old girl (the owner) with braided blonde hair watches at the tunnel entrance, worried then joyful, clutching a small red necklace. The puppy is small with wet, wide eyes, wagging its tail and licking the boy's hand. Location: moss-covered stone fort with a low vaulted dark tunnel, fallen rocks and damp footprints, golden sunset light filtering in. Moment: the puppy's release, tight composition on the characters, warm emotions, saturated colors and soft textures, contrast between the tunnel shadow and warm exterior light, reassuring adventurous atmosphere. Style: 3D animated film render, cute expressive characters, rounded volumes, detailed textures (stone, moss, fur), warm contrasting palette and cinematic depth of field.

The Great Puppy Rescue

Reading 5 min. (7) 9-10 years old Available in audio story

Curious Oliver and his friend Mia investigate a missing puppy at an old fort, following clues through hidden tunnels and mysterious corners.

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A 10-year-old boy with a round freckled face, short tousled brown hair, wearing jeans and a khaki jacket, crouches with an open notebook and a pencil behind his ear as he gently unrolls a night-blue poster; Lina, about 9, with black hair in a ponytail and a mischievous smile, hands muddy, stands to his left smoothing the poster with open palms; Theo, about 11, with dark curly hair and a relieved, sheepish expression, holds a black violin case near a theater door behind the red velvet curtain; the scene is a hallway of a cultural center lined with colorful posters and light parquet flooring, the rolled "Moonlight Mysteries" poster found behind the stage, a small silver star sticker on the floor and a strip of shiny tape on the wall, mood one of mutual help and a gently resolved mystery.

The case of the missing moon poster

Reading 15 min. (1) 9-10 years old

When the Moonlight Mysteries poster disappears at the community center, observant Milo and his friend Lina follow small clues through the building to discover who took it and why.

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A relieved, focused 10-year-old boy with tousled chestnut hair kneels in the sand, carefully pulling a small gold trophy still in a paper bag stained with blue paint; behind him, about 10-year-old Maya with black braided hair and an encouraging smile but worried brows stands hands on hips watching; beside him, Jasper, ~10, in a slightly dirty red hoodie, ashamed but relieved, crouches with hands in the sand; nearby, middle-aged Mr. Hobb in overalls and gloves with a sleeve stained blue paint stands slightly back, ashamed but relieved; setting: lively schoolyard fair, sandbox with a large yellow plastic turtle, red slide and swing, freshly painted bright blue wooden fence, green grass and confetti; scene: joyful, calming reveal of the trophy found under the plastic turtle in soft late-afternoon light, careful gestures and relieved expressions, centered composition on the trio and trophy, warm colors contrasting with blue paint; style: visible brushstrokes, thick acrylic textures, bright childlike palette, sharp facial and trophy details, slightly blurred background.

The mystery of the missing trophy at Maple Street School Fair

Reading 20 min. 9-10 years old

When the Maple Street School Fair's shiny Cleanest Classroom Trophy goes missing, young detective Leo and his friends follow paint-scented clues around the playground to uncover who moved it.

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Tommy, a 10-year-old boy with a round freckled face, short messy brown hair and thin glasses, crouches holding a small silver camera and shines its light into a dark hole; his little sister Mia, about 6, with curly hair in pigtails and a relieved, joyful face, clutches a brown teddy bear with a large blue button eye and stands beside him; their friend Riya, also 10, energetic with braided black hair and brown skin, leans forward shining a yellow flashlight down a narrow fabric-lined tunnel to reveal a small pile of toys and the teddy, the blue button highlighted, dust motes sparkling; they are in an escape-room styled room with faux aged wood walls, copper gears, warm filament lamps and a dusty plank floor, composition intimate and centered with expressions of wonder and relief.

The case of the missing teddy

Reading 9 min. (1) 9-10 years old

When Mia's beloved teddy goes missing, her older brother Tommy becomes a careful detective, following small clues and enlisting friends to unravel a neighborhood mystery.

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A 10-year-old boy with a round freckled face and furrowed brow kneels in a dusty attic holding a small notebook and camera, peering at an open metal biscuit tin; his 7-year-old cousin Lily, playful and embarrassed with chestnut pigtails, sits behind a pile of blankets with stuffed animals in a circle, hands clasped on her knees; their gray-haired grandmother, hair in a bun and a gentle smile, watches from the garden visible through a skylight while holding a watering can; the orange tabby cat Marmalade lounges on an old trunk; the cluttered attic has warm wooden boards, stacked boxes, old suitcases and scattered buttons, yellow shafts of light through dust, and a tender, slightly mysterious atmosphere centered on the discovery of an empty biscuit tin on a wooden chest with sticky crumbs trailing toward the quilts.

The case of the missing lemon biscuits

Reading 6 min. (2) 9-10 years old

When Oscar discovers his grandma’s lemon-biscuit tin missing, he becomes a detective and follows a crumb trail to the attic, where a mysterious note hints at a secret club.

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A 10-year-old boy with a round face and short tousled brown hair, focused and curious with big bright eyes, crouches in a small cluttered pantry by a low hole in the baseboard holding an open cereal box and inspecting small traces of flour; his 6-year-old sister with blonde pigtails and mismatched socks stands behind on a plastic crate, surprised and delighted with hands to her mouth; a gray cat named Biscuit with soft fur and half-closed green eyes sits near the pantry door, tail curled around its paws, while the parents stand in the kitchen doorway watching, the scene lit by warm light with crumbs and a thin trail of flour leading to the hole — the boy-detective has discovered a small cereal thief.

Detective Milo and the Case of the Missing Cereal Moons

Reading 13 min. (9) 9-10 years old Available in audio story

When Milo discovers his favorite chocolate cereal moons have vanished, he turns detective, following crumbs and clues through the pantry as he interviews suspects and stages a careful stakeout to solve the mystery.

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A 10-year-old boy, Charlie, with tousled hair and curious, bright eyes, holds a flashlight in one hand and a notebook in the other, displaying a determined and excited expression. Next to him, Maya, a 9-year-old girl with braided brown hair and a mischievous smile, looks around with sparkling eyes full of enthusiasm. Sam, a 10-year-old boy with round glasses and blond hair, leans forward, intrigued, holding a school map. The scene takes place in the dark, mysterious school hallway, with pale blue walls, metal lockers, and colorful posters, creating a familiar yet unsettling atmosphere. Shadows dance on the floor as a soft light emanates from Charlie's flashlight. The three friends, in investigator mode, carefully scan the floor for clues, their faces illuminated by the light, ready to solve the mystery of the missing trophy.

The Midnight Mystery at Willow Grove School

Interactive story (9) 9-10 years old

When strange things start happening after hours at Willow Grove School, Charlie and his friends sneak through the halls at night to solve the puzzle before the adults do.

In this interactive story, it's you who chooses the next step at each stage: your decisions influence the course... and the end of the adventure!

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Une illustration destinée aux enfants représentant un jeune garçon curieux et aventureux, résolvant le mystère de la disparition du chat d'une vieille dame, avec l'aide de ses amis, dans le charmant village de Willow Creek, où les maisons colorées bordent une petite rivière étincelante.

Oliver and the Mysterious Cat-napper

Reading 4 min. (8) 9-10 years old Available in audio story

When a beloved cat goes missing in Willow Creek, young detective Oliver and his friends embark on a thrilling adventure to solve the mystery and bring the furry friend back home.

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A 10-year-old boy, Oliver, freckled with tousled brown hair and wide green eyes, carefully fits an ancient golden necklace into a constellation-shaped groove on a tree stump while Mrs. Maple, a gentle 65-year-old librarian with gray hair in a bun and round glasses, stands slightly left with hands to her chest, and two child friends (a 10-year-old boy and a 9-year-old girl) crouch to the right with headlamps on the ground, excited and muddy; the night clearing is ringed by gnarled trees, ferns and glowing mushrooms, fireflies float beneath a starry opening, warm headlamp light mixes with cool moonlight, watercolor textures with white gel-pen highlights on the necklace and stars, creating a magical, intimate, peaceful moment.

The Starry Quest

Reading 6 min. (3) 9-10 years old

In a small town, a young boy named Oliver sets out to solve the mystery of a missing necklace and the sudden disappearance of the beloved librarian, Mrs. Maple, leading him on a thrilling adventure filled with clues and surprises.

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Une illustration destinée aux enfants représentant un jeune garçon curieux se lançant dans une enquête mystérieuse avec l'aide d'un fantôme amical, dans le sombre et majestueux manoir de Willow Grove entouré de grands chênes centenaires.

The Enigma of Willow Grove Manor

Reading 4 min. (4) 9-10 years old Available in audio story

Join young Oliver as he receives a mysterious invitation to unravel the secrets of Willow Grove Manor, leading him on a thrilling adventure filled with puzzles, clues, and the history of a long-lost heirloom.

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Une illustration destinée aux enfants représentant un jeune garçon aux cheveux bouclés et aux yeux brillants, enquêtant sur la mystérieuse disparition d'une boulangère, avec l'aide d'une gentille fée, dans la pittoresque ville de Willowbrook, où les grands chênes se balancent doucement et les fleurs colorées bordent les sentiers pavés.

The Quest for the Golden Key: Oliver's Adventure

Reading 5 min. (2) 9-10 years old Available in audio story

Oliver, a brave and curious boy, embarks on a mysterious adventure in the enchanted town of Willowbrook to uncover the truth behind a puzzling disappearance.

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Girls' detective stories for children aged 9 to 10

Stories of little investigators: boys (20)

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