A priceless diamond disappears from a museum. The security footage shows the thief was wearing gloves, but one clue is overlooked. What is it?

Category: Mystery · Difficulty: hard

Hint: Look for evidence that can't be hidden.

Answer

A hair left on the display case.

Explanation

The hair could belong to the thief, providing DNA evidence that could identify him despite wearing gloves.

This is a hard mystery riddle — a tricky one that takes a little thought. The answer is A hair left on the display case..

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