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Cover of The Insiders
Chapter · ages 9–12

The Insiders

Written by Cath Howe

Part of Cath HoweView the full series

When a tight-knit group of friends realises someone has been secretly living in their school at night, they investigate, uncovering a classmate's hidden family troubles. A warm mystery about friendship, communication and the things we don't say.

  • Best for9–12
  • FormatChapter
Where to buyPaperback
WaterstonesIn stock
£7.99
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The vibe

What it’s like.

Style

  • Conversational

Tone

  • Warm
  • Thought provoking
  • Gentle
  • Suspenseful

Themes

On the pagefriendship troubles, school, mystery, blended family, homelessness

Experience meters

Energy3/ 5
Humour2/ 5
Scariness1/ 5
Peril2/ 5
Wonder1/ 5
Cosiness2/ 5
Emotional intensity3/ 5
Conceptual intensity3/ 5

What’s it about?

The story.

Callie, Ted, Zara and Nico are more than best friends, they're like family. But since a school prank went badly wrong and left him humiliated, Ted has stopped talking to the rest of the gang. Then Callie, Zara and Nico make a strange discovery: someone has been living in their school, sleeping in the building after everyone has gone home. Determined to find out who, they start to investigate, without Ted. What they don't realise is that the answer lies close to home. Their classmate Billy, the boy behind Ted's embarrassment, has troubles of his own: with his mum away and his dad's work taking him out of town, Billy has been left with a colicky baby, an angry stepsister and nowhere he feels he belongs. Told from the shifting viewpoints of Callie, Ted and Billy, Cath Howe's fourth novel is a beautifully observed story about friendship, family upheaval and how much can go unspoken between people who care about each other.

Fit check

Right for your child?

Where it lands by age

Pitched at independent readers of 9-12, with a mystery accessible to the younger end and emotional layers that reward older ones. The short, multi-narrator chapters also make it an easy shared read from about 8.

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  • 5
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  • Best fit · 9–12
  • Read aloud · 8–11
  • Independent · 9–12

Prose load

Moderate

Visual support

None

Reluctant-reader friendly

Workable

Read-aloud quality

Workable

Moderate sensitivity1 content warning

Preview before sharing if a child is sensitive to: absent parent.

Bedtime suitability

2 / 5 · Better outside bedtime

Sensitive-child

3 / 5 · Mostly fine

Graphic intensity

1 / 5 · None

Best for

  • Friendship troubles
  • School stories
  • Gentle mystery
  • Emotional realism

Avoid if

  • Wants high adventure
  • Wants light escapism

Particularly good for children who are…

  • Making friends
  • New step parent or blended family

Why it lands

Why they love it.

Why kids love it

The mystery of a hidden someone sleeping in the school after dark is a brilliant hook, and switching between three narrators means readers piece together the truth before the characters do. The secret den and detective work make it a page-turner with real heart.

  • Being a detective
  • Friendship and belonging
  • Having a secret base

Why parents love it

Howe braids a genuine mystery with a compassionate portrait of a boy quietly struggling at home, showing how easily we misjudge each other. The multiple viewpoints make it a rich prompt for talking about empathy and communication.

  • Conversation starter
  • Great writing

In the series

Cath Howe.

6 books · open the series →

About the author

Cath Howe.

CH

Cath Howe

Writer · United Kingdom

Cath Howe is a British children's author and teacher based in south-west London, who writes warm, perceptive contemporary novels about the emotional realities of growing up. A former secondary English and drama teacher who still runs writing workshops with young readers, she made her debut with Ella on the Outside in 2018 and has followed it with Not My Fault, How to Be Me, The Insiders, My Life on Fire and Two is a Crowd, all published by Nosy Crow. Her books turn an unflinching but tender eye on the pressures of school life, the longing to belong, sibling guilt, grief and family upheaval, often told through shifting viewpoints that let readers feel every side. Written with real empathy and honesty, they are quietly gripping reads for 9–12s navigating friendship, change and the courage to be themselves.

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Come into this from…

Easier or preparing reads — perfect lead-ins.

Where to go next…

Escalation reads — a step up in scale, silliness, or stakes.

Last reviewed · July 2026Suggest a correctionHow we recommend

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