An art collector was found dead beside a shattered glass display. His will left his entire estate to his cat. The prime suspect was his nephew, who had a motive and no alibi. However, Detective Ross noticed that every single piece of broken glass had fallen *inside* the display case rather than onto the gallery floor. What did this prove?
The glass was broken from the inside out, meaning someone inside the case or a mechanism pushed it out, or the collector was pushed into it from behind the wall.
When glass breaks from an impact on the outside, the shards fall inward. When glass breaks from an inside force, the shards fall outward. If the glass fell inside, the force came from the inside, clearing the nephew who was standing outside.
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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