Bertie and his dog stumble across a notebook in code on the streets of World War II London. Is the notebook’s owner a spy? Can Bertie and his friends crack the code before something terrible happens?  
Ages 10+
Pages 272
Publisher Penguin Random House
Coming Nov 2021

Average Rating

79 Reviews

Featured Reviews

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A great story!

Review by Hudson

How I Became a Spy is a great story about WW11 in London. It is also a great book if you want to learn about WW11 and codes and ciphers. You should read this book if you liked the book The Bicycle Spy.

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How I Became a Spy by Jordan

Video review by Jordan

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How I Became a Spy by Jordan

Reader Reviews

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Great Book!

Review by MillieMooB

I love this book so much. Their are a lot of codes. Also If you like learning about world war 2, then this is definitely a book you should read.

May 28, 2023 11:57 AM
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so good!!!!

Review by caracalwildcat

its so!!!!!!!!!!!!!!!!!!!!!!!!good i love this book

Mar 20, 2023 05:05 PM
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decent book

Review by funsoccer

if you like codes then you will like this book

Jan 05, 2023 07:32 PM
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How I Became A Spy

Review by IWantToRead20

A very interesting book about codes and decoding.

Jan 03, 2023 02:46 PM
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I liked it!

Review by danielminecraft

Great book! Definitely recommend!

Nov 03, 2022 05:20 PM