A fingerprint was found on a glass, but no one recalls touching it. What explains this mystery?

Category: Mystery · Difficulty: medium

Hint: Consider the timing of evidence vs. the current event

Answer

The fingerprint was old residue

Explanation

Old residue fingerprints can linger, making it seem like someone touched the glass recently when they did not.

This is a medium mystery riddle — a moderate challenge for most people. The answer is The fingerprint was old residue.

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