30 mysteries. Every child is the detective.
A puzzle book for ages 8 to 12. Logical thinking, calm reading and solving together, with no murder and nothing scary.

Why in the classroom?
Logical thinking
Who stood where? Children reason step by step on a floor plan.
Reading with a goal
Short sentences and plain words. Every clue counts.
Alone or together
Quiet work, or solving together in a small group.
Grows with them
From easy to extra hard. Every child starts where they can.
Look inside the book
Real pages from the test edition (Dutch)Swipe for more
Four hint puzzles
Stuck? Solve a mini puzzle. It tells you who to start with.
Maze
Which name leads to the magnifying glass?

Secret code
Every picture is a letter.

Crack the code
Count things on the floor plan.

Word search
One name runs from top to bottom.

Where can you stand?
Green: you can stand or sit on it. Red: you can only stand next to it. Every child sees it at once.

Try a case first
Print case 2 and play it with your class. No account, no email.
Download the case (pdf)

Choose your cover
The same 30 cases, five covers.
Order for your class
On invoice, with a custom price for larger orders. Delivery in the Netherlands and Belgium.
- Ask for a quoteQuantity, cover and date.
- Get your quoteWe do our best: within 48 hours.
- Delivered to schoolPay on invoice.
The book is still being finished. Ask for a quote now; we deliver as soon as it is ready.
For one child?
The book is also sold on its own, €9.99.
Questions
What age is it for?
Ages 8 to 12. The first cases are easy, the last ones extra hard.
Is it about murder?
No. A cake goes missing, or someone tells a joke. Exciting, never scary.
Do you need a screen?
No, and no account either. Everything is in the book, including the answers and how to solve them.
How long does a case take?
An easy case takes a few minutes. An extra hard case fills a lesson nicely.
Where do you deliver?
In the Netherlands and Belgium, to the school’s address.



















