An old miser was found dead in his study with a single bullet wound. There were no firearms anywhere in the room, no footprints in the surrounding fresh snow outside, and the windows were frozen shut from the inside. How was he shot?
Icicle gun
The killer used a frozen icicle bullet fired from a homemade rig, which melted completely away leaving no murder weapon or gunpowder residue.
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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