The Hidden Number Files — Three-Book Collection | Digital Edition

One number survives. Can you find it?

Join Zora Bell for 300 number mysteries across three interactive digital casebooks. Read witness statements, eliminate candidates and uncover the hidden number, with challenges ranging from Gentle to Fiendish.

Your collection includes:

• Gentle: 100 two-digit number mysteries, with sealed witness statements and a clue budget.

• Standard: 100 three-digit number mysteries for a greater deductive challenge.

• Fiendish: 100 four-digit number mysteries, each featuring six statements and exactly one lying witness.

Tap candidates to eliminate them, check your answers and track your solved cases and stars. Gentle and Standard challenge you to solve within the clue budget to earn three stars.

How to use your books

Download all three HTML files and open your chosen book in a compatible modern web browser. These are interactive browser books, not PDFs or EPUBs.

Progress saves separately for each book in the browser you use. Use the built-in Backup and Restore controls to keep a copy of your progress or transfer it between devices. Clearing browser data can remove saved progress.

What you receive

Three downloadable HTML casebooks containing 300 puzzles in total. Digital download only; no physical product. For personal use only. plus PDF version

Digital download — cancellation and refunds

By requesting immediate access, you agree that supply begins straight away and acknowledge that you lose your 14-day cancellation right once supply begins. Change-of-mind refunds are not available after this point.