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Series Mystery ages 7–10

Monsieur Mustard

Part of the collectionMonsieur Mustard

A comic detective series for 7+ starring a tiny, dapper Parisian mouse - fast, silly and stuffed with colour illustrations for readers who love a mystery to look at.

  • Books1 / 2
  • Arcs1
  • Span2026
  • StatusOngoing
Start hereMonsieur Mustard: The Disappearance of Fabio FangtoothBook 1 · 2026 · the natural entry to the series
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The series

At a glance.

The Monsieur Mustard series follows the world's number one, best-dressed and possibly smallest detective - a Parisian mouse newly settled in Bath - as he solves comic mysteries with a cast of odd, endearing friends. The debut, The Disappearance of Fabio Fangtooth, opens when a restaurant owner vanishes mid-soup and Mustard reads of it in the local paper. With Mobbsy the flatulent master-of-disguise shrew and Professor Thingummy the food-obsessed inventor at his side, he sets out to crack the case before the villain catches him first. Written and illustrated by Charley Rabbit, the books are stuffed with colour illustrations throughout and break into full graphic-novel pages for their most thrilling detective scenes: funny, fast and gloriously silly.

A comic detective series for 7+ starring a tiny, dapper Parisian mouse - fast, silly and stuffed with colour illustrations for readers who love a mystery to look at.

Primary themes

Overall tone

  • Funny
  • Exciting
  • Suspenseful
  • Whimsical
Reading order

A new series; start with the debut, The Disappearance of Fabio Fangtooth.

One arc

The shape of the series.

  1. I
    Standalone collection arcLow sensitivity

    Monsieur Mustard

    The series opener: a dapper mouse detective takes on a restaurant owner's disappearance in Bath.

    The first Monsieur Mustard adventure opens when Fabio Fangtooth vanishes mid-alphabet-soup one quiet evening in Bath. Enter Monsieur Mustard, a Parisian mouse newly moved to the city and unable to resist a mystery, who reads of the disappearance in the local paper and sets out to crack the case. With help from a cast of splendidly odd new friends - Mobbsy, a flatulent shrew and master of disguise, and Professor Thingummy, a food-obsessed inventor - Mustard closes in on a villain who may just catch him first. Stuffed with colour illustrations and breaking into full graphic-novel pages for its most thrilling scenes, it is a funny, fast, gloriously silly entry point for newly confident readers who love a mystery.

    Reads as

    • Funny
    • Exciting
    • Suspenseful
    • Whimsical

Fit check

Right for your reader?

Where the series lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • 15
  • 17
  • 19
  • Best fit · 7–10
  • Read aloud · 6–9
  • Independent · 7–10

Reluctant-reader friendliness

Very high

Read-aloud quality

Strong

Adult crossover

Low

Grows with the reader

Not especially

Sensitivity envelope

Low overall, and consistent.

LowSeries-level

Where it sits

In conversation with other series.

Similar in feel

Different shelves, same wavelength.

  • The Bolds by Julian Clary

About the author

Charley Rabbit.

Charley Rabbit

Both

Author-illustrator of Monsieur Mustard, a comic-strip-studded detective series for 7+ — funny, fast and stuffed with a dapper Parisian mouse's odd new friends.

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