- Illustrated Chapter Books
- Ages 9–12
- Mystery

Montgomery Bonbon: Mystery at the Manor
Book 3 in Montgomery BonbonView the full series
A retired master thief's diamond vanishes, his butler turns up dead, and four suspicious protégés all have something to hide. A classic country-house whodunit with a hedge maze full of monkeys.
- Best for9–12
- FormatIllustrated
- Length288 pp
- Read aloud~4 hr5 min
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The vibe
What it’s like.
Style
- Comedic
- Conversational
Tone
- Funny
- Whimsical
- Cosy
Themes
Experience meters
What’s it about?
The story.
Bonnie Montgomery is invited to Adderstone Manor by Fergus Croke, a retired master thief whose most prized diamond has just gone missing, and who suspects one of his four scheming protégés of stealing it. Then Croke's loyal butler is found dead in the grounds, and what began as a stolen-jewel puzzle becomes a full-blown murder case. As Montgomery Bonbon, Bonnie must navigate hidden identities, tangled motives, secret passages and a hedge maze overrun with monkeys to expose the truth. Alasdair Beckett-King leans into the grand country-house mystery tradition for the third Bonbon case, and Claire Powell's illustrations relish every eccentric suspect. It is the series at its most gleefully classic: fair-play clues, a house full of liars, and a solution that is complicated enough to satisfy while staying perfectly followable for young detectives keen to beat Bonbon to the answer.
Fit check
Right for your child?
Where it lands by age
Best for independent readers of about 9-12, and a treat read aloud to 7-10s who like puzzling out suspects together. Deaths are handled with cosy comic lightness, keeping it suitable for sensitive readers who enjoy a proper mystery.
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- Best fit · 9–12
- Read aloud · 7–10
- Independent · 8–11
Prose load
Moderate
Visual support
High
Reluctant-reader friendly
Very
Read-aloud quality
Strong
Works well for
- Reading aloud
- Reading together
- Gift-buying
- Reluctant readers
Nothing in the book is likely to concern most parents. Safe to recommend without preview.
Bedtime suitability
3 / 5 · Workable
Sensitive-child
4 / 5 · Good fit
Graphic intensity
1 / 5 · None
Best for
- Mystery fans
- Funny stories
- Detective stories
- Cosy mysteries
Avoid if
- Wants gritty realism
- Dislikes puzzles
Why it lands
Why they love it.
Why kids love it
A stolen diamond, a dead butler, four suspicious suspects and a hedge maze full of monkeys make Adderstone Manor the perfect place for a mystery. Uncovering everyone's hidden identity as Montgomery Bonbon, and spotting who's lying before the reveal, is enormously satisfying.
- Being a detective
- Trickery and cleverness
- Having a wise mentor
Why parents love it
The third case is the most traditionally Christie-shaped: a grand house, a locked circle of suspects and a genuinely clued solution. It's clever without being cruel, funny throughout, and short chapters plus lively artwork keep less confident readers moving.
- Shared humour
- Great writing
- Quick to read
In the series
Montgomery Bonbon.
5 books · open the series →
About the creators
About the creators.
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