Here's a detective story with a difference. Elliot is twelve - and he thinks outside the box. Numbers are his thing - and letters. So when 'the biggest mystery that struck our school in the history of the world' needs to be solved, Elliot is the one to call on.

But the solution lies inside the book itself - only it's locked away in a series of puzzles and palindromes.

Can you find the clues, solve the puzzles and find the culprit?

In this mind-boggling detective story with a twist, the reader is the true detective!

A mind-boggling detective story with a twist - where the reader is the true detective!

One of the amazing books from the Cold Fusion series, this story is ideal for more able reluctant readers who appreciate letter and number patterns.

The clues to the mystery can be found hidden in the pages of the book, providing something different from usual detective stories.