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Detective riddle

A rich diamond merchant was murdered in his locked study. The only clue was a torn calendar page on the floor showing 'June 31'. Who was the culprit?

About this riddle

Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.

Difficulty: Easy. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.

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