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Top Secret - A Handbook of Codes, Ciphers and Secret Writing by Paul B. Janeczko

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"The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious." — SCHOOL LIBRARY JOURNAL (starred review)Pssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don't look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment - making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko's tantalizing TOP SECRET won't stay a secret for long.

Hardcover

First published April 12, 2004

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325 people want to read

About the author

Paul B. Janeczko

62 books48 followers
Paul B. Janeczko is a poet and teacher and has edited more than twenty award-winning poetry anthologies for young people, including STONE BENCH IN AN EMPTY PARK, LOOKING FOR YOUR NAME, SEEING THE BLUE BETWEEN, and A POKE IN THE I, which was an American Library Association Notable Book.

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5 stars
68 (33%)
4 stars
80 (39%)
3 stars
40 (19%)
2 stars
10 (4%)
1 star
4 (1%)
Displaying 1 - 30 of 33 reviews
Profile Image for Nancy O'Toole.
Author 20 books61 followers
July 28, 2010
Top Secret is a fascinating book about secret codes for kids. The book is divided into three sections. The first focuses on making many different kinds of codes and ciphers. The section section then focuses on the breaking of those codes. The third section focuses on different ways to conceal codes. Paul Janeczko writes in a way that very inviting to children. It's obvious that he shares a great love for codes and cipher and that enthusiasm can be infectious. Every section that introduces a new type of code and cipher includes clear directions and examples for children to try on their own. The solutions can be found in the back. The book is scattered with various illustrations bu Jeanna LaReau that feature a male and female spy making and breaking codes. They are attractive and do a good job of emphasizing the feeling of teamwork that Janeczko is trying to emphasize in this book. There is also a history element to this book as the author gives background information on some of the codes, as well as highlights famous spies from history. The historical aspect, although not the focus of the book, does a good job on grounding the activities in real life. Top Secret is a well put together book and an appropriate choice for clever children that want to learn more about codes, ciphers, and secret writing.

Note: This review was written for a class
Profile Image for Katrina.
4 reviews
August 15, 2025
Great book. Explains how zip codes start w 0 north east to 9 north west. Ssn also are based on location for the first 3 digits. Isbn is specific to author if they don't want to use name. This book also explains languages like morse/light language or pig latin. Surprised it didn't have braille or asl. Date shift cipher based on bdays of favorite people Poets etc. It also explains flag language aka semaphore for long distance conversation code.
Profile Image for Amy Rogers.
142 reviews3 followers
June 7, 2022
Top Secret was a very interesting book to read. I learned a lot about the history of spies, ciphers, and codes around the world.

I also learned several codes and ciphers along with how to decode or decipher them. There were also quite a few of ideas on how to conceal messages.

This was a nice book to read.
333 reviews3 followers
May 6, 2017
It contained a good amount of information but it was quite unclear at times. It did contain good examples and explanations so I hope that kids would walk away from reading it bother entertained, intrigued and curious about human ingenuity and strategical thinking thoughout history.
Profile Image for Sarah Stegeman.
78 reviews1 follower
January 16, 2022
Out of 5 stars, with 3 being an average, I give this one 4.5 stars. It is a helpful and easy to understand explanation of codes and ciphers, with some cipher and code-breaking history mixed in. There are pages to practice both enciphering and deciphering messages.
Profile Image for Kate.
592 reviews8 followers
June 13, 2017
An easy and fun introduction to codes and ciphers. Plus, I learned the difference between a code and a cipher, so I'd call that a definite win.
3 reviews
February 15, 2018
Written for kids, and very easy to understand different codes and ciphers. A really fun book to read with my kids, and fun to have moments to practice making and breaking codes.
Profile Image for Donna Zigmont.
312 reviews7 followers
June 15, 2018
I really liked this book. I'm currently playing a murder mystery game and it involves the use of codes and ciphers to solve some of the clues. It helped a lot. found it very interesting.
Profile Image for Mike.
500 reviews1 follower
March 16, 2019
Such a fun book, with approachable ciphers and codes for middle schoolers. Used it for an escape room activity at our middle school. Highly recommend!
Profile Image for Margo Brooks.
643 reviews13 followers
January 16, 2020
I would have loved this as a kid. It is even better than the code book I had when I was a little girl.
Profile Image for min125.
49 reviews
January 21, 2022
This book offers a great introduction to codes and ciphers! It is easy to follow and the activities are fun to do. I loved all the history tidbits throughout the book!
1 review
November 16, 2023
An excellent book filled with interesting codes.
Profile Image for Kimberly McCollum.
157 reviews3 followers
July 20, 2025
This was a fun book, intended for kids, that covered some of the same material as in the Code Book but in much less depth. However, this book provided more opportunities for readers to practice encrypting and decrypting messages.
Profile Image for Stacie Alexander.
15 reviews
November 20, 2014
Janeczko, P. B. (2004). Top secret: A handbook of codes, ciphers, and secret writing. Cambridge, MA: Candlewick Press.

Citation by: Stacie Alexander

Type of reference: Handbook

Call Number: Ref 652

Content/Scope: This handbook provides instruction on how to use codes, ciphers, and secret writing. It also includes history of the various codes, recipes for secret inks, and puzzles with answers. The book includes a bibliographical reference list and an index. The book covers a wide range of codes from Pig Latin to Zigzag ciphers.

Accuracy/Authority/Bias: The author provides references to sources and the book shows his in-depth research on the topic. Information is accurate.

Arrangement/Presentation: Information is arranged in a student-friendly format that includes history of the code or cipher along with example puzzles with answers. The book features black and white illustrations to add humor to the text. The author presents facts in an interesting manner to engage the reader.

Relation to other works: The library does not have other books about coding right now that specifically show how to use the codes. This book provides information as well as practice puzzles.

Accessibility/Diversity: This book is written for elementary readers but contains interesting facts and fun activities that students of all levels will enjoy. The book contains many different codes and ciphers for students explore and will appeal to students of all backgrounds.

Cost: $14.50

Professional review of the item: Suite, C., & Mandell, P. L. (2004). Top secret: A handbook of codes, ciphers, and secret writing. School Library Journal, 50(5), 170.
Profile Image for Kym.
253 reviews1 follower
February 9, 2009
A fun very interesting book, only need about an hour with it and you can encipher and decipher codes with your friends.

My daughter and I had fun using the book cipher method for coded messages.

There are short stories of instances in history where codes and ciphers were used.

glcw dyb

(keyboard cipher used. For every letter I typed, the key stroke to the left was used. To decipher, look at your keyboard and look to the right of each letter. For letters on the far right of the keyboard, wrap to the first letter on the front of the line)

good luck!
Profile Image for RumBelle.
2,047 reviews18 followers
August 20, 2016
I read this to get ideas for a program I am doing at the library. It was a wonderful guide to not only the history of codes, but a wide variety of different types of codes and ciphers. Many of them would make excellent additions to my program. Some of the ones I enjoyed learning about were the Rosicrucian and the Playing Card codes. As a book to read itself it was fascinating, I learned a lot about cryptography.
Profile Image for Goose.
138 reviews
August 29, 2014
Sure, it's a book for little kids. It has 14-point font, cartoon illustrations, and easy language, but it also has little bits of history (the interesting kind) and a lot of ciphers to practice with friends. Which is exactly my plan. (I'm coming for you, Jean!)
121 reviews3 followers
September 5, 2013
I found this book very fascinating. it gave me tons of information on codes, ciphers, and stories of how this secret writing helped during times of war. im totally going to use one of those codes with my friends!!
6 reviews2 followers
June 8, 2007
I got a bunch of kid's books on codes and ciphers out of the library, and this was the best one. It's a great introduction and has a really playful style that I liked.
Profile Image for Christian.
24 reviews
September 24, 2008
If I was an english teacher I would share this book with some students because some students might have imaginary minds so they might think they are spies.
Profile Image for Sara.
156 reviews1 follower
November 6, 2012
This book made me want to be a spy or a detective. Those who like to bother people with riddles and secrets you should read this book.
Profile Image for C.E. G.
960 reviews38 followers
January 10, 2013
Not interesting enough to read cover to cover, but fun to skim through the different ciphers. Would probably keep a kid busy for a while, or even an adult with an interest in ciphers.
21 reviews4 followers
May 10, 2013
It was an informational book that was quite fun about encoding mysterious cords that made me feel like I'm special
Profile Image for Linda.
318 reviews1 follower
August 16, 2014
What a fun read! The basics of coding and ciphering are clearly presented, and the bit of history thrown in is most appreciated.
Displaying 1 - 30 of 33 reviews

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