A wealthy merchant was found dead in his study during a fierce winter blizzard. The heater was off, and the room was freezing. The only clues were a burnt-down candle and a small puddle of water near the window. Detective Miller realized the killer entered through the locked window without leaving footprints in the snow outside. How?
An icicle
The killer used a large icicle as a makeshift bolt or lock for the window from the outside, which eventually melted into the puddle of water after the killer escaped.
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: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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