Melissa & Doug On the Go Secret Decoder Book: 18 Mystery Puzzles with Decoder Wheel & Magic Pen
Melissa & Doug On the Go Secret Decoder Book: 18 Mystery Puzzles with Decoder Wheel & Magic Pen
The Melissa & Doug On the Go Spy Mystery Secret Decoder Book turns young readers into code-cracking detectives. This activity kit includes 18 illustrated pages, a built-in rotary decoder wheel, and a magic-reveal pen for uncovering hidden clues. The tab-close covers keep everything together, making it a practical choice for screen-free fun on car trips, planes, or anywhere.
What comes with the Secret Decoder Book?
- 18 activity pages – each presents a new mystery to solve using codes and clues.
- Rotary decoder wheel – bound into the book and visible from every page, easy to turn.
- Magic-reveal pen – makes invisible ink visible, revealing secret messages and clues.
- Directions – simple instructions on how to use the decoder wheel and pen to solve the puzzles.
How the decoder wheel and magic-reveal pen work together
The rotary decoder wheel helps children match symbols, numbers, or letters to decode ciphers printed on each page. The magic-reveal pen adds an extra layer of mystery by showing hidden images or words that aren't visible otherwise. Together they encourage logical thinking and observation.
Specifications at a glance
| Number of activity pages | 18 |
| Included tools | Decoder wheel, magic-reveal pen |
| Book type | Activity book with tab-close covers |
| Series | Melissa & Doug On-the-Go |
| Play value | Unlimited – each page is a new challenge |
| Storage | All items store neatly within the covers |
Common questions about this spy decoder book
How many mysteries can kids solve?
The book contains 18 activity pages, each offering a different code to crack or whodunit to solve.
Is the decoder wheel attached to the book?
Yes, the rotary decoder wheel is bound directly into the book and visible from every page, so it won't get lost.
What does the magic-reveal pen do?
It reveals hidden clues and secret messages on the pages that are not visible to the naked eye.
Can the book be used while traveling?
Absolutely. The tab-close covers keep everything stored neatly, and it's part of the On-the-Go line designed for portable, screen-free entertainment.
This Melissa & Doug set promotes problem-solving, deductive reasoning, and hours of independent play. No batteries, screens, or apps required – just a love for mystery.