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Mystery and Detective Books for KS2

best mystery stories for ks2

Recommended Children’s Mystery Stories 

Prepare to be puzzled and perplexed by this hand-picked list of the best mystery and detective stories for KS2 children! With codes to crack, red herrings to spot and trails of clues to follow, these mystery stories offer top-quality storytelling that young readers won’t be able to put down.

From children’s detective books set in iconic cities, like Villains in Venice and The Clockwork Conspiracy, to mystery adventures in historical settings like Friends and Traitors and A Case of Grave Danger, this list features stories of theft, murder and disappearance that will captivate children aged 7 to 11.

So don your deerstalker hat, grab your magnifying glass and prepare to solve the clues!

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Top Detective Stories for Children

Chapter book

A full-steam-ahead adventure that had me hooked from the get-go. The Highland Falcon Thief is a middle-grade mystery story set on a steam train. With a high spirit of adventuring and a good and proper mystery that unfolds with clues and red herrings along the course, this is a brilliantly fun story that is sure to be on track to find itself set among the very best in the children’s mystery genre.

Harrison Beck (Hal) ends up aboard the last-ever journey of a famous royal steam train, ‘The Highland Falcon’, unwillingly accompanying his travel-writer uncle. Hal doesn’t think much of steam trains, and he is even less impressed when he finds there are no other child passengers on board and no electricity to charge his devices. Before long, Hal finds himself caught up in entertainment of a more old-fashioned kind. A mystery begins to unravel among the passengers and what’s more, Hal befriends a secret stowaway girl called Lenny and the pair set to work to solve the mystery before The Highland Falcon reaches the end of its last-ever journey.

It’s a full-throttle mystery with likeable characters and a well-paced plot that is especially full of treasures for anyone who loves trains. Even those who are not particularly into trains – like myself – will enjoy the feeling of being immersed in the world of locomotions, and the joy of being on board one comes across with great passion. Highly recommended!

Chapter book

A classic adventure story with plenty of action and daring rescues topped off with a good helping of home-baked scones. Four cousins – Aiden, Ava, Chloe and Josh – are staying with their grandparents along with their pet dog, Bella, at a farmhouse in the country. After nearly getting knocked down by a fast car during a bike ride one day, they discover the woman who narrowly missed them has more to hide than just her bad driving.

After overhearing a suspicious conversation outside a sinister-looking country pub, they decide to follow her and in so doing stumble upon a trail of missing royal diamonds, some stolen sheep and a gang of dangerous, daring jewel thieves. A thrilling chase across the moors ensues, complete with swirling mist, dangerous bogs and even a spot of breaking and entering. Will the cousins be able to track down the missing diamonds?

Set against a fabulous backdrop of beautiful stately homes and gardens, wild moors and twisting, turning country lanes, this story shares the same sense of adventure as the Famous Five but is brought up to date for young readers in the modern age.
Chapter book
11-year-old Laura moves to live with her uncle in Cornwall, where she soon discovers mystery is in store. Why won't her uncle let her go to Dead Man's Cove? Who has left a secret message in a bottle for Laura to find? The award-winning first book in Lauren St John's Laura Marlin series is an absolute delight. It has all the ingredients of a classic children's mystery story: friendship, adventure, a seaside setting and of course, a loyal dog.
Chapter book
Join brave Kat Wolfe and her animal sidekicks in this first mysterious adventure filled with friendship, freedom and a fierce wild cat!Kat Wolfe loves her new home in idyllic Bluebell Bay, especially as it comes with a resident wildcat. But when she starts pet-sitting for pocket money, she finds that beneath the town's perfect surface lie some dark and dangerous secrets . . .After a pet owner vanishes from his clifftop mansion, Kat turns to her new friend, Harper Lamb, for help. What began as mystery-solving holiday fun quickly turns deadly for Wolfe and Lamb. Can they count on their unruly animals to save their lives?Kat Wolfe Investigates is the first in a compelling middle-grade mystery series from bestselling author Lauren St John. Continue the adventures in Kat Wolfe Takes the Case .
Chapter book

Twitch is in Year 7, where he is the victim of vicious bullying. Not surprisingly, he would prefer the company of birds to anyone at his school. His plan for the summer holidays, when he finally finishes the first year of secondary, is to spend his time bird watching and also train his pigeons to home. However, his plans are thwarted when a dangerous convict, in prison for murder, escapes. The police believe the escapee will be returning to the area where Twitch is planning to spend his summer- Aves Wood. There are also millions of pounds involved that have yet to be recovered. Twitch makes some unlikely allies and together they end up trying to track down the prisoner and find the lost millions. But with so much at stake, this becomes a highly hazardous pastime.

M G Leonard writes beautifully and knowledgeably about birds and bird-watching. As someone who has never been a bird watcher, I ended up going out with my family and looking for birds and we all got interested. I think this book would do the same for many children. The story is infused with a love of nature in general and birds in particular and it leaves a vivid impression.

Twitch himself is a very likeable hero and his ingenious problem solving is both clever and engaging. He is a fantastic role model, and I was overjoyed to discover he will feature in further books.

This is an exciting adventure, a mystery story and one that also deals with some difficult topics such as bullying and a parent in jail. It is also so full of interesting wildlife facts I felt I had learnt a lot by the end of it. It would also make an excellent read-aloud story that children would really enjoy for the suspense and great storytelling.


Chapter book

Join ‘The After School Detective Club’ on their first adventure in the sleepy seaside town of Southwold. Consisting of Lucy, Max, Charlie and her canine companion, Sherlock, the group of children become friends one dark, wet evening when Sherlock decides to pick a fight with a mysterious stranger who appears to be signalling from some large rocks to ships at sea.

This is an exciting, fast-paced adventure story with plenty of action. The illustrations, by Ben Mantle, are liberally sprinkled throughout the text and beautifully illustrate it. Reminiscent of both Fleur Hitchcock and Enid Blyton, this series promises to be one to watch. A must-read for anyone who loves a good adventure story, this would make a great class read as there are plenty of end-of-chapter cliffhangers.

Murder Mysteries for KS2

Chapter book
When Viv has a fight with Noah, she doesn't think it'll be the last time she sees him. But when she gets back from school, he's nowhere to be found and there are police cars everywhere, lights flashing and sirens blaring.Viv is sure Noah's run away to get attention. But it's really cold, and getting dark, and the rain just won't stop falling. So she sets off to look for him, furious at his selfishness, as the floodwaters rise. And then she finds him, and realises that a much more dangerous story is unfolding around them...
Chapter book

Nik and Norva are sisters who live on a high-rise estate called ‘The Tri’, so named because of the 3 towers of flats in a triangle formation. With their dad being the estate caretaker, Nik and Norva know just about everyone who lives there, and they make it their business to know everything that’s going on.

In the summer’s height, a valued community member goes missing and there appears to be something very fishy going on. The sisters start looking and what they find confirms their worst fears – by the look of it, there’s been a murder.

Once they’ve dealt with the initial shock, Nik and Norva create a case file containing suspects, motives and alibis. With a limited police presence, they can make a nuisance of themselves by asking the right questions to the right people and, combined with some cunning eavesdropping, they begin to draw some conclusions. But as all the evidence points to one person, the pressure is on get to the real truth of the mystery before it is too late.

High Rise Mystery is an important book with cultural references and language that will resonate well with those who see themselves reflected in its pages. The chapters of this book are punctuated with case notes to keep track of the investigation, whilst the interaction of the characters gives a real sense of what it is like to live in this urban community. You can almost hear the sounds, taste the foods and feel your lungs burn when they have to endure 22 flights of stairs when the lift is broken in 30-degree heat. The result is a page-turner of a book, that you can’t put down because ultimately you want to know ‘whodunnit’!

Chapter book

The Murder Most Unladylike books form a series of children’s murder mystery novels written by Robin Stevens. Popular with children aged 9-12, the stories follow the adventures of two schoolgirls who set up their own detective agency.

Fans of the Murder Most Unladylike series enjoy the stories’ unfolding mysteries told through Hazel’s witty case notes. Readers also love the fast-paced plots with clever twists, the character-centred drama and also the 1930s boarding school setting. The stories deal with important themes like friendship, diversity, loyalty and social class against the backdrop of the murder investigations. Additionally, many children enjoy the collectibility of the series with their rainbow-hued covers and sprayed edges.

Super-Fun Mystery Stories

Chapter book

How many of us remember the choose-your-own-adventure stories popular a few decades ago and find ourselves wondering why we rarely see new ones published today? Popular author Gareth P. Jones reintroduces the genre with ‘The Monster Maker’ – an imaginative detective story for readers looking for an interactive adventure, with hundreds of paths to choose from.

Haventry is a town where ghosts, zombie clowns, werewolves and vampires (amongst others) reside happily. That is, until Dr Franklefink’s Monster Maker machine is stolen and everyone becomes a suspect. It is then up to you to investigate and solve the mystery. Your detective partner and boss is none other than private investigator Klaus Solstaag, a yeti who is on a mission. Will you find the truth? What motive does your prime suspect have? Can you find the missing Monster Maker?

In this solve your own mystery story, readers will enjoy choosing which aspect of the crime to investigate next and sussing out who the real suspects are. For fans of the extraordinary and of detective mysteries, this is a must-read.

Chapter book

This is a delightful book celebrating family and friendships and is part of a very popular series. Anisha is a funny and resourceful character, whose love of STEM and eye for detail makes her the perfect detective in this humorous series of mysteries.  Anisha has an extended family that proves to be strong and supportive when things go wrong. There are authentic cultural references exploring Anisha’s Indian heritage, particularly around food and family.

The illustrations by Emma McCann help to reflect the humour in the story and the text is often broken up with lists and diagrams, making the book particularly appealing to children who may be daunted when faced with full pages of text. 

Chapter book

Skilfully weaving together two truly charismatic and memorable protagonists with a realistic, relatable modern setting and a plot full of masterly twists and turns, Lori and Max is a brilliant pacy children’s detective story.

Immediately drawing us in with the prologue, we swiftly discover that some school charity money has been stolen and newgirl Max, the prime suspect, has gone missing. But Lori knows more than she can tell and doesn’t believe her new friend is really to blame. From here on in, chapters alternate between the two girls as we slowly unravel the events before and after Max’s disappearance, before winding our way to a dramatic and satisfying conclusion.

Lori is a budding amateur sleuth and all-round goodie-two-shoes. As well as being an orphan and a bit of a loner, she has a loving nan and stable middle-class home life. Lori’s chapters are written in the first person present tense which gives an immediacy to her thoughts as mental cogs turn and we decode the clues along with her. Max is the new girl at school, who’s hard secretive carapace hides a difficult home life – no food on the table thanks to a gambling addict father, and no emotional support from her depressed and distant mum. Max’s chapters are written in the second person which gives us more distance to wonder what’s actually going on inside her head.

We love so much about this book, in particular the skilful way the disparity between the girls’ home lives and personalities is handled, and the realistic (and hilarious) portrayal of school life, where every day is a stream of Wow Words, confusing assemblies and trying not to stand out from the crowd.

The fast-moving plot and short 182-page length makes it perfect for those with quicker read, rapidly building suspense while never sacrificing character and deeper themes.

Mystery Adventures in Iconic Cities

Chapter book

Debut author Jo Clarke makes a triumphant entry to the lower middle-grade market with the start of a new detective adventure series about a travelling school, which will be illustrated by Becka Moor. The series promises adventures in different cities around the globe, and this first one is set in Paris.

The dreamy scenes of the Parisian skyline provide a backdrop for a detective adventure in which macarons are never far from the thoughts of the main characters. If you’ve never had the chance to fall in love with the sights, sounds and tastes of Paris, you will be charmed by the city’s delights after reading this story.

Just the right amount of peril for a younger audience, combined with a fun boarding school element and enough clues to keep the predictions rolling makes for a perfect stepping stone into the detective fiction genre for the younger end of the middle-grade market.

The author’s expertise as a librarian and book blogger shines through in hitting just the right spot for the intended age of the book’s audience. With themes of friendship and loyalty, a positive tone and a good sprinkling of fun, this mystery story is likely to be a big hit with lower KS2.

Chapter book

Ted and his sister Kat watch their cousin Salim climb aboard the London Eye. But when his pod returns to the ground and the doors open, Salim has completely vanished. Where could Salim have gone? Has he been kidnapped — or worse? With the police baffled by his disappearance, it’s down to Ted to use his unique abilities to solve the mystery — following a trail of clues that lead across London, with Kat’s help. Starring a brilliant young detective, Siobhan Dowd’s ‘howdunnit’ is a real classic, which will keep you gripped from beginning to end.

Chapter book
A locked-room mystery packed with rooftop chases, hidden codes and mind-bending science, The Clockwork Conspiracy is a must for fans of the Adventures on Trains series and Sharna Jackson's High Rise mysteries. Aspiring inventor Isaac Turner lives with his dad, the Chief Horologist in charge of Big Ben. But when his father vanishes from the belfry on the night the clocks go back, leaving behind only a smashed pocket watch and a cryptic message, Isaac determines to find him.Hunting a trail of clues through London’s landmarks, Isaac uncovers a sinister plot in the gears of government and embarks on a race against time to save his father – and time itself.
Chapter book

Sophie Taylor and Lilian Rose make an unlikely but successful pair of secret agents, whose previous adventures in the first two books in this growing detective series have seen them solve mysteries in Paris and St Petersburg.

Now, it’s the winter of 1912 and the pair of friends are facing a surprise betrayal from someone within the Secret Service Bureau. With a double agent on the loose, the detective duo set about to navigate the tricky issue of working as a team when they are not quite sure who to trust. A new line of enquiry sets in motion an undercover mission to Venice – complete with its atmospheric canals, carnivals, piazzas and crumbling architecture. Can the pair avoid the enemies lurking in the shadows and find the final piece of their puzzle?

Many readers who have read and loved the author’s previous detective series called the Sinclair Mysteries will adore these fast-paced international adventures that are characterised by a slightly more grown-up feel. With a strong sense of peril and not-quite-knowing-who-to-trust, plenty of twists, interesting geographical details and gutsy, inspiring female lead characters, this is a thrilling middle-grade series with a winning formula for fans of detective stories.

Mystery Stories with Historical Settings

Chapter book

The Secrets of the Treasure Keepers is a wonderfully immersive story that takes the reader back to what life might have been like for one family at a particular moment in history. The story felt extra special as it is a rare example of fiction set in the Fens, near BooksForTopics HQ. I know that the author’s commitment to highlighting this area of the country will be warmly welcomed by schools both in the local area and also for those readers yet to discover the hauntingly beautiful geography of the Fens.

The story centres around the apparent discovery of some buried Roman treasure in the field of a struggling farming family. Ruth and her mum – a budding archaeology expert – visit the farm to discover more. What drives the story is the unfolding secrets and backstories of the various different main characters – all interesting and well-nuanced – making for an enjoyable mystery full of intrigue and due compassion for the desperation that can drive deceit.

I particularly enjoyed the well-drawn historical setting of post-war Britain. We see a lot of middle-grade stories set during the war, but the period immediately after the war had finished is just as interesting and much less widely considered in children’s books. How does a country get back on its feet after the devastation of the war? No stone is left unturned when it comes to incidental details that flesh out the time and place of the story’s setting. The country is still reeling from the war’s impact and the reader is given space to reflect on the difficulty this caused for different individuals – for example in terms of ongoing rationing, widespread poverty, the ‘make do and mend’ mentally, missing family members, the dawn of the NHS and the deeply-felt consequences of the war’s destruction on property, people and family relationships. A major theme of the story is embracing change and looking at ways to improve the future even during difficult times – a theme that is just as relevant today as it was in 1948. For me, this is the crux of what makes A.M. Howell’s writing so compelling; the stories feel so authentically and evocatively set in their time period while also being timeless in their themes.

Heartfelt and hopeful, this is a historical adventure not to be missed.

Chapter book

A Victorian murder mystery that has plenty of twists and turns and is difficult to put down.

All Violet Veil has ever wanted is to be taken seriously and to become an apprentice in her family’s business, Veil and Sons’ Undertakers. Unfortunately, she is denied this opportunity simply because she is a girl. When there is a spate of killings, business appears to be good for Mr Veil. That is, until one rainy night when one of the dead bodies comes back to life! In the undertaker’s back room, Violet meets Oliver, a young boy who lives on the streets, and together they embark on an investigation to solve Oliver’s own ‘murder’. They are accompanied by Violet’s loyal greyhound, Bones, who has an affinity for the graveyard that lies next to the Veil’s house and business. In spite of her parents’ disapproval, plucky Violet vows to solve this mystery and Oliver is allowed to stay. When Violet’s father is later accused of these murders, Violet, Oliver and Bones must uncover the truth once and for all in a bid to save Mr Veil’s life.

This book has a strong female lead with a loveable sidekick. Violet’s headstrong nature and sense that justice must be done make her a character that you can’t help but root for. The story takes its readers along on the journey of the investigation and is nail-biting in places.

A must-read for lovers of detective stories, ghostly tales and historical fiction. There is a sense of dark adventure and foreboding throughout and this makes the spooky nature of the story very appealing. 

Chapter book

Historical setting – tick. Dastardly villains -tick. Mansion house setting – tick. Poor girl -tick. Rich girl – tick. Yes, this book has all the ingredients for a fantastic, edge-of-the-seat historical spy adventure.

The combined themes of war and espionage will make this book one that children will want to read and a good addition to the canon of World War 2 stories suitable for slightly younger readers. It is a bit of old-fashioned daring-do, coupled with real historical detail and jeopardy. The tension is palpable throughout the story and the desperation of the heroines feels real. There is nothing here that slightly younger KS2 readers would find difficult, with only mentions of what is happening to Jews in Germany at the time and the violence is at a minimum.

The interesting part of the story is about the differences in the lives of the two girls due to their class and circumstances. The postscript at the end of the book makes it clear how the upper classes were really able to get away with things due to their standing in society and the two girls are like a microcosm of this class divide.

This is a tremendously exciting read, one I could not put down and read all in one go.

Chapter book

The first book in the ‘Lizzie and Belle Mysteries’ series sees the young best friends and amateur detectives use their skills to investigate odd goings-on in a theatre, which in turn reveals further mysteries and crimes which they must solve.

Set in Georgian London, this book illuminates the multiracial history of Britain, and the struggles and injustices faced by Black people in a place where many powerful people thrived on keeping slavery alive. It also demonstrates that White people had an important role, as well as responsibility, to offer support to Black anti-slavery activists and to challenge the White slave owners of the time. Many of the characters and events in this book are based on real people and things that happened, and there is a lot of scope to research real stories. The real Elizabeth Sancho was daughter of the African-British writer and abolitionist Ignatius Sancho. Dido Belle was the daughter of Maria, an enslaved young African woman, and John Lindsay – captain in the British Royal Navy.

This is a fantastic mystery story, which could also lead to discussions about race, theatre, slavery and family history.

Author JT Williams also visited our blog to discuss the role of fiction in bringing history to life for children.

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