100,000+ Books, Games & Puzzles in-stock 🇳🇿

Overnight NZ-wide delivery on all in-stock orders 🚀

Cecily Sawyer: How to Crack a Code

Series: Cecily Sawyer
Brief Description
The second thrilling, mysterious and very, very funny Cecily Sawyer mystery, from the award-winning author of Einstein the Penguin. Cecily Sawyer is surrounded by spies. They’re everywhere – on the streets, in her home, at her school – and after intercepting a highly suspicious message intended... Read More
Format: Paperback / softback
$1999
Pre-order
Releases 29th September 2026 (Approx. Date) Pre-order  "Cecily Sawyer: How to Crack a Code" now to secure your copy from our first shipment

Found a better price? Request a price match

The second thrilling, mysterious and very, very funny CECILY SAWYER mystery, from the award-winning author of EINSTEIN THE PENGUIN.

An Unputdownable and Whip-Smart Spy Mystery for Children

Book Hero Magic formatted this description to make it easier to read. While it's new and still learning, it may not be perfect - your feedback is welcome! Description

The second thrilling, mysterious and very, very funny Cecily Sawyer mystery, from the award-winning author of Einstein the Penguin.

Cecily Sawyer is surrounded by spies. They’re everywhere – on the streets, in her home, at her school – and after intercepting a highly suspicious message intended for her parents (also spies), Cecily, along with her highly-intelligent pet mouse, Mrs Maple Syrup, decides to investigate.

And the more that Cecily digs, the further the mystery deepens… forcing her to question who – if anyone – she can really trust.

Hugely gripping, incredibly funny, highly original, and brilliantly illustrated throughout by David Tazzyman, How to Crack a Code is an unputdownable mystery – perfect for fans of Robin Stevens and Katherine Woodfine.

Also available in the series:

Cecily Sawyer: How to be a Spy

Praise for Cecily Sawyer: How to be a Spy:

"With so many undercover agents vying for attention, the choice can seem daunting – but Cecily Sawyer: How to Be a Spy, a delightful new adventure by Iona Rangeley, shows the detective formula working at its best… Rangeley is a witty, beguiling writer – and what follows is a neatly plotted adventure, in which each clue forms part of a puzzle which the reader can piece together as the narrative rips along." – The Telegraph

"Whip smart, absolutely hilarious and full of charm." – Laura Noakes, author of Cosima Unfortunate Steals a Star

"A fabulous book" – Zohra Nabi, author of The Kingdom over the Sea

"A charming and elegant corrective to the notion that 10-year-old girls and mice have no role to play in espionage." – Luke Jennings, author of Killing Eve

"I firmly recommend this book. A very good start for those who want to join the profession or who just want a good read." – Sir John Scarlett, former Chief of MI6 (really)

Series: Cecily Sawyer

View all

Book Details

INFORMATION

ISBN: 9780008644482

Publisher: HarperCollins Publishers

Format: Paperback / softback

Date Published: 18 June 2026

Country: United Kingdom

Imprint: HarperCollins

Contributors:

  • Illustrated by David Tazzyman

Audience: Children

DIMENSIONS

Spine width: 20.0mm

Width: 129.0mm

Height: 198.0mm

Weight: 220g

Pages: 240

About the Author

Iona Rangeley grew up in Norfolk and studied English at Oxford, where she developed a love of children's books. She has wanted to be a writer since her debut novel, Sam and the Pig, which she wrote when she was five.

Also by Iona Rangeley

View all

More from Children's Books

View all

Why buy from us?

Book Hero is not a chain store or big box retailer. We're an independent 100% NZ-owned business on a mission to help more Kiwis rediscover a love of books and reading!

Service & Delivery

Service & Delivery

Our warehouse in Auckland holds over 80,000 books, toys, board games and puzzles in-stock so you're not waiting for your order to arrive from overseas.

Auckland Bookstore

Auckland Bookstore

We're primarily an online store, but for your convenience you can pick up your order for free from our bookstore, which is right next door to our warehouse in Hobsonville.

Our Gifting Service

Our Gifting Service

Books make wonderful thoughtful gifts and we're here to help with gift-wrapping and cards. We can even send your gift directly to your loved one.