A rare diamond was stolen from a glass display case. The security guard swore he never left his chair facing the case, the room had no other doors or windows, and the glass was completely unbroken. However, Detective Thorne noticed a massive puddle of water directly beneath the display pedestal. What really happened to the diamond?
The diamond was frozen inside a large block of ice that served as the pedestal, and it simply melted over time.
The thief didn't need to break the glass or sneak past the guard; they replaced the pedestal with a block of ice containing the diamond prior to the shift, and it melted during the guard's watch, leaving only the gemstone behind.
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: Medium. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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