Katrielle and the Millionaires' Conspiracy walkthrough
Puzzle Location: Chancer Lane Corner (Wooooster)
In searching the house of a man under suspicion of being a spy, an envelope is discovered in the letterbox.
To view the contents without opening the envelope, a light is shone through, and some sort of code is revealed.
What could it possibly say?
The letters haven't been replaced.
What is written is a three-letter word.
The letters are written exactly as they should be, but they appear different to normal.
Figure out how that could be.
The paper inside the envelope is folded in half.
If you imagine the letters divided between top and bottom, and one half being reversed on top tof the other, this is what it would look like.
The answer is 'BYE'.