A witness sees a figure but later it disappears without a trace. What explains the sighting?

Category: Mystery · Difficulty: medium

Hint: Think about reflective surfaces under certain conditions

Answer

A reflection on a foggy window

Explanation

Foggy windows can create fleeting reflections that look like figures.

This is a medium mystery riddle — a moderate challenge for most people. The answer is A reflection on a foggy window.

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