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Detective riddle

A rare diamond necklace was stolen from a hotel safe. The suspect had a rigid alibi: he was swimming laps in the indoor hotel pool when the theft occurred at midnight. The pool water was pristine, and the lifeguard confirmed seeing him. Yet, Detective Cruz arrested him. Why?

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.

More detective riddles

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