A priceless ruby was stolen from a locked glass display case. The security guard swore no one approached the case during his shift. Detective Thorne noticed a puddle of clean water directly beneath the case, even though the museum roof had no leaks. How did the thief steal the ruby without breaking the glass or unlocking it?
The ruby was made of ice.
An ice sculpture of a ruby would melt over time, leaving a puddle of water and disappearing completely without a trace, explaining how it vanished from a locked case.
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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