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Cover of Ada Twist and the Perilous Pants
Illustrated · ages 6–9

Ada Twist and the Perilous Pants

The Questioneers Book #2

Written by Andrea Beaty · Illustrated by David Roberts

Book 2 in The QuestioneersView the full series

Top giftable

The second Questioneers chapter book: scientist Ada Twist uses the scientific method—and a lot of quick thinking—to rescue Rosie's Uncle Ned after his helium-filled trousers float him into the sky. Silly, high-flying STEM fun.

  • Best for6–9
  • FormatIllustrated
  • Length144 pp
  • Read aloud~58 min
Where to buyPaperback
Amazon
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The vibe

What it’s like.

Style

  • Conversational
  • Comedic

Tone

  • Funny
  • Warm
  • Silly
  • Inspirational

Themes

On the pagescientific method, science, problem solving, birds, flight

Experience meters

Energy4/ 5
Humour4/ 5
Scariness1/ 5
Peril2/ 5
Wonder3/ 5
Cosiness3/ 5
Emotional intensity2/ 5
Conceptual intensity2/ 5

What’s it about?

The story.

Ada Twist is a scientist through and through: she asks why, forms a hypothesis, gathers data and tests everything. She's busy investigating why hot coffee smells stronger than iced, and taking part in the Great Backyard Bird Count, when a real emergency lands in her lap. Rosie Revere's Uncle Ned has drifted off into the sky in his famous helium-filled pants, and it's up to Ada to bring him safely down. Working through the problem step by careful step—and borrowing some of her brother's equipment—Ada must turn Uncle Ned's runaway buoyancy into the very thing that saves him. From the bestselling team behind Ada Twist, Scientist, this illustrated chapter book puts the scientific method at the heart of a delightfully silly adventure. David Roberts's illustrations bring the runaway pants and the whole gang of Questioneers to life, while Beaty slips in real vocabulary and ideas that make science feel like the most exciting game in town.

Fit check

Right for your child?

Where it lands by age

Aimed at 6–9s reading independently, with short chapters and lots of David Roberts's illustrations to carry newer readers. It reads aloud well from about 5 and suits fans of the Ada Twist picture book and Netflix series wanting a longer story.

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

Prose load

Light

Visual support

High

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

5 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Stem for kids
  • Girl scientists
  • Funny adventure
  • First chapter books

Avoid if

  • Wants high peril

Particularly good for children who are…

  • Interested in science

Why it lands

Why they love it.

Why kids love it

A grown-up floating away in helium trousers is exactly the kind of absurd emergency kids adore, and it's the smallest scientist in Blue River Creek who works out how to get him down. Ada's brain is the superpower here.

  • Secret skill
  • Proving yourself
  • Making a difference
  • Trickery and cleverness

Why parents love it

Beaty threads genuine science vocabulary and reasoning through a plot silly enough to keep any reader turning pages. Short chapters and generous illustrations make it a confidence-builder, and Ada is a wonderful model of a curious, determined girl.

  • Educational for adult too
  • Shared humour

In the series

The Questioneers.

7 books · open the series →

About the creators

About the creators.

AB

Andrea Beaty

Writer · United States

Andrea Beaty is an American children's author and the creator of the Questioneers — the runaway-bestselling series that began with the picture books Iggy Peck, Architect, Rosie Revere, Engineer and Ada Twist, Scientist and grew into a family of illustrated chapter books. A former software engineer who studied biology and computer science, Beaty writes funny, quietly rigorous stories that treat curiosity as a superpower: her young heroes ask questions, make mistakes, gather evidence and try again. Illustrated throughout by David Roberts, the Questioneers champion science, creativity and perseverance with a diverse, complementary cast, and inspired the Emmy-winning Netflix series Ada Twist, Scientist. Beaty's books have become classroom and bedtime staples for children who want to know how the world works.

More from Andrea Beaty
DR

David Roberts

Illustrator · United Kingdom · b. 1970

David Roberts is a British illustrator, born in Liverpool in 1970, who came to children's books after a string of odd jobs and a spell as a milliner — a background that shows in his stylish, spindly, fashion-conscious line. He is best known as the illustrator of Andrea Beaty's multi-million-selling Questioneers, from the Iggy Peck and Ada Twist picture books to the illustrated chapter-book series that follows the same diverse gang of curious, problem-solving children through STEM adventures, gentle mysteries and civic scrapes. His detailed, characterful drawings give each Questioneer a distinct personality and turn settings — a haunted mansion, a stormy night — into characters in their own right. A four-time Kate Greenaway shortlistee, Roberts is one of the most recognisable illustrators in contemporary children's publishing.

More from David Roberts

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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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