A priceless diamond was stolen from a glass display case. The guard swore nobody entered the room, yet the glass was shattered inward, with all the shards lying neatly inside the case on the velvet cushion. How did the thief pull it off?
The glass was broken from the inside
If the shards fell inward onto the velvet cushion, the pressure must have come from the outside? No, if you push glass from the outside, shards fall inside. Wait—if shards are *inside*, it was broken from the outside. But the riddle states shards lie neatly inside. If someone broke it from *inside* (unlikely for a sealed case), shards would fall *outside*. Thus, it was an inside job, or the case was frozen water that melted.
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: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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