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Detective riddle

A security guard reported that an intruder smashed the front glass window of a jewelry store from the *inside* to escape with a tray of diamonds. Detective Sterling inspected the shattered glass fragments scattered entirely across the sidewalk outside and arrested the guard on the spot. What gave the guard away?

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

Lord Blackwood was poisoned at his dinner party. Four guests shared his meal: the Duchess, the General, the Chef, and the Doctor. Each ate the exact same food except for the dessert. The Duchess ate a pear, the General ate an apple, the Chef ate a plum, and the Doctor ate a peach. The poison was slow-acting and ingested through the skin hours earlier via a handled object at the estate. The butler testified that only the Doctor brought a polished silver scalpel to cut his fruit, the Chef used a wooden spoon, the Duchess used a gold fork, and the General used an iron dagger. Detective Thorne arrested the killer based on the fruit knife. Who was the killer?

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