In a dimly lit study, a historian was shot. The prime suspect claimed he was reading a book in the dark corner of the room when he heard the shot, and that he didn't turn on a light because he preferred reading by moonlight. Detective Sterling checked the moon phase for that night and immediately arrested the suspect. Why?
It was a new moon, meaning there was no moonlight to read by.
During a new moon, the night sky is pitch black, making it impossible to read a book by moonlight as the suspect claimed.
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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