A priceless diamond was stolen from a locked glass case during a fierce thunderstorm. The night watchman claimed he never left his guard shack. Detective Reed inspected the wet footprints leading inside, but noticed the footprints inside were completely dry. Why did Reed arrest the watchman?
The watchman
If someone had broken in from the outside during the storm, their footprints entering the building would have been wet. The dry footprints inside prove the person was already inside the dry building before tracking water outside to fake a break-in.
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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