In a dark warehouse, a watchman was found tied to a chair. He insisted a masked intruder crept up behind him and struck him on the forehead. The detective looked at the watchman's injuries and immediately called him a liar. Why?
You cannot be struck on the forehead by someone behind you
An attacker approaching from behind would strike the back or top of the head, not the forehead.
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.
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