A grid of random letters hides a clue, which is revealed by correctly positioning a transparent sheet over the top.
The grid below hides the clue “ON THE CLOCK”. A transparent overlay with circles on it has to be correctly positioned on top of the grid to circle the correct letters to spell out the clue.
![A grid of letters on A4 paper](https://www.treasure-hunt-ideas.co.uk/wp-content/uploads/2023/12/letters-with-transparent-overlay-1.png)
![Circles scattered across A4 paper](https://www.treasure-hunt-ideas.co.uk/wp-content/uploads/2023/12/letters-with-transparent-overlay-2.png)
![Grid of letters with circles laid over the top to circle specific letters](https://www.treasure-hunt-ideas.co.uk/wp-content/uploads/2023/12/letters-with-transparent-overlay-3.png)