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Cover of The Invisible String
Picture · ages 3–8

The Invisible String

Written by Patrice Karst · Illustrated by Joanne Lew-Vriethoff

Bestseller list

A widely used comfort book about love connecting people even when they are apart. Especially useful for separation anxiety, bereavement, bedtime worries, school transitions and children who need reassurance.

  • Best for3–8
  • FormatPicture
  • Length40 pp
  • Read aloud~8 min
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The vibe

What it’s like.

Style

  • Conversational
  • Second person

Tone

  • Gentle
  • Heartwarming
  • Warm
  • Inspirational
  • Cosy

Themes

On the pagecomfort metaphor, family connection, love across distance, separation anxiety, invisible string, bedtime worries, grief support, storm fear

Experience meters

Energy1/ 5
Humour1/ 5
Scariness1/ 5
Peril1/ 5
Wonder2/ 5
Cosiness5/ 5
Emotional intensity3/ 5
Conceptual intensity3/ 5

What’s it about?

The story.

The Invisible String offers children a simple, memorable metaphor: people who love each other are connected by an invisible string, even when they cannot see or touch one another. In the story, children wake frightened during a storm, and their mother explains that love can stretch across distance, through darkness and even beyond death. The book is direct, reassuring and easy for young children to understand, which is why it is often used by families, teachers and therapists for separation anxiety, grief and big transitions. It is not a subtle literary picture book, but it is emotionally effective and highly parent-useful. Joanne Lew-Vriethoff's illustrations support the message warmly, making abstract connection visible without overcomplicating it. This is an essential practical recommendation rather than an art-led discovery title.

Fit check

Right for your child?

Where it lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 3–8
  • Read aloud · 3–9
  • Independent · 6–9

Prose load

Light

Visual support

High

Reluctant-reader friendly

Very

Read-aloud quality

Strong

Works well for

  • Reading aloud
  • Bedtime
  • Reading together
  • Reluctant readers
Low sensitivity1 content warning

Preview before sharing if a child is sensitive to: grief.

Bedtime suitability

5 / 5 · Bedtime-friendly

Sensitive-child

5 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Separation anxiety
  • Grief support
  • Comfort book
  • Bedtime worries
  • Parent child bond

Avoid if

  • Wants subtle literary style
  • Wants funny story
  • Recent grief too raw

Particularly good for children who are…

  • Separation anxiety
  • Bereavement
  • Starting school
  • Bedtime battles
  • Parents separating or divorcing
  • Moving house

In the classroom

How it works in school.

A comforting picture book about the invisible string of love connecting us — a go-to pastoral read for separation, anxiety and loss.

Classroom role

  • Discussion and empathy
  • Read aloud

Good for teaching

  • Theme

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 use is reassurance — a small child who's anxious about being apart from a parent, or about loss, gets a simple physical metaphor (the string between hearts) they can actually picture. Direct, repeatable, easy to refer back to at bedtime. The picture book a child quotes back at you months later.

  • Becoming invisible
  • Family belonging
  • Friendship and belonging
  • Surviving danger

Why parents love it

The picture book to keep on the shelf for separation anxiety, bereavement, and any goodbye that's harder than expected. Therapists and school counsellors use it for a reason — the metaphor lands fast and is easy to refer back to. Not subtle, but exceptionally practical when you need it.

  • Conversation starter
  • Bedtime appropriate
  • Educational for adult too
  • Quick to read

About the creators

About the creators.

PK

Patrice Karst

Writer · United States

Patrice Karst is an American author best known for The Invisible String (2000), a picture book about the unseen connections between loved ones, illustrated by Joanne Lew-Vriethoff and used widely in bereavement, separation-anxiety and adoption reading. The book has sold over a million copies and become a near-universal recommendation for children processing distance from loved ones. Karst's voice is warm, deliberately simple and emotionally direct. A reliable picture-book author for ages 3–7 in the emotional-literacy register.

More from Patrice Karst
JL

Joanne Lew-Vriethoff

Illustrator · Netherlands

Joanne Lew-Vriethoff is a Malaysian-Dutch illustrator best known to UK and US children's-book readers as the visual partner on Patrice Karst's The Invisible String, a quietly transformative picture book about the unseen connections between loved ones, used widely in bereavement and separation reading. Lew-Vriethoff's style is bright, character-driven and warmly inclusive, with strong feel for depicting diverse families and contemporary settings. A reliable contemporary picture-book illustrator for ages 3–7 in the emotional-literacy register.

More from Joanne Lew-Vriethoff

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Where you’ll find it

On these reading lists.

Buy or borrow

Pick up a copy.

  • Bookshop.org
  • Waterstones
  • Amazon UK
  • Hive
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Last reviewed · April 2026Suggest a correctionHow we recommend

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