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Cover of Ember Spark and the Unicorn's Secret
Illustrated · ages 7–10

Ember Spark and the Unicorn's Secret

Written by Abi Elphinstone · Illustrated by Kristina Kister

Part of Ember SparkView the full series

Top giftableAdults love it tooEndlessly rereadable

A rainforest-set third Ember Spark adventure, adding unicorn mystery to the magical-beast-rescue formula. It is cheerful, fast and accessible, with enough series familiarity to reward returning readers.

  • Best for7–10
  • FormatIllustrated
  • Length224 pp
  • Read aloud~3 hr10 min
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The vibe

What it’s like.

Style

  • Conversational
  • Comedic

Tone

  • Adventurous
  • Exciting
  • Funny
  • Heartwarming

Themes

On the pageunicorn, magical beasts, rainforest, secret mission, animal rescue, friendship, apprentice

Experience meters

Energy5/ 5
Humour4/ 5
Scariness2/ 5
Peril3/ 5
Wonder5/ 5
Cosiness3/ 5
Emotional intensity2/ 5
Conceptual intensity2/ 5

What’s it about?

The story.

Ember Spark's work as apprentice to magical-beast vet Rusty Fizzbang continues with another urgent mission. This time, the adventure leads towards a unicorn secret and a wild new setting full of magical possibility. Ember and Arno have already faced dragons and frost phoenixes, but every creature brings different dangers, different needs and different lessons about courage, kindness and trust. Abi Elphinstone keeps the series' pace brisk and child-friendly, blending jokes, villainy, wonder and animal-rescue stakes. Kristina Kister's illustrations help make the fantasy world inviting for readers who still benefit from visual support. As the third book, The Unicorn's Secret is best for children who already know Ember's world, but the central magical-beast mystery gives it the satisfying shape of a self-contained adventure.

Fit check

Right for your child?

Where it lands by age

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

Prose load

Moderate

Visual support

Moderate

Reluctant-reader friendly

Very

Read-aloud quality

Strong

Works well for

  • Reading aloud
  • Reading together
  • Gift-buying
  • Reluctant readers
Low sensitivityNo content warnings

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

  • Magical animals
  • Unicorn story
  • Series continuation
  • Funny fantasy
  • Reluctant reader pick

Avoid if

  • Has not read earlier books
  • Wants realistic school story
  • Very sensitive to peril

Particularly good for children who are…

  • Reluctant reader
  • Making friends

In the classroom

How it works in school.

A magical, fast-paced early fantasy-adventure series — a great pick for newly independent readers.

Classroom role

  • Classroom library

A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.

Why it lands

Why they love it.

Why kids love it

The specific kick is a rainforest unicorn mystery — Ember and Arno's third assignment, the magical-beast world stretching into the jungle, a new creature whose secret matters. The Ember Spark for a child who wants their unicorn book with proper plot.

  • Animal companions
  • Magic powers
  • Going on a quest
  • Making a difference
  • Friendship and belonging

Why parents love it

The third Ember Spark — rainforest setting, unicorn mystery, the magical-vet rescue formula in a fresh location. Best read after the first two; the apprenticeship friendship continues. Reliable illustrated middle-grade fantasy.

  • Shared humour
  • Quick to read
  • Conversation starter

In the series

Ember Spark.

3 books · open the series →

About the creators

About the creators.

AE

Abi Elphinstone

Writer · United Kingdom

Abi Elphinstone is a British middle-grade author best known for the Sky Song / Unmapped Chronicles fantasy series, adventure novels set in richly-imagined wilderness landscapes (Arctic tundra, lost magical kingdoms, jungle) with strong female leads. Her books include The Dreamsnatcher trilogy, Sky Song, Rumblestar, Jungledrop, Everdark and Casper Tock and the Everdark Wings. Elphinstone's voice is warm, well-paced and reliably bookseller-friendly, with a clear-eyed sense of the middle-grade-fantasy reader's appetite for adventure plus emotional warmth. A reliable contemporary UK middle-grade fantasy author for ages 8–12.

More from Abi Elphinstone
KK

Kristina Kister

Illustrator · United Kingdom

Kristina Kister is an illustrator best known to UK children's-book readers as the visual partner on the Ember Spark middle-grade illustrated-chapter-book series (Ember Spark and the Frost Phoenix, …and the Thunder of Dragons, …and the Unicorn's Secret), magical-creature adventures for ages 7–10. Kister's style is bright, character-led and atmospheric, well-matched to the chapter-book reader transitioning from picture books into longer illustrated narrative. A reliable contemporary illustrator for fantasy-creature illustrated chapter books.

More from Kristina Kister

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Last reviewed · May 2026Suggest a correctionHow we recommend

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