A jeweler reported that his safe was picked during a busy afternoon, but the heavy steel door showed zero scratch marks around the combination dial or the keyhole. Detective Reed checked the floor beneath the safe and found a pile of fine metallic dust. How did the thief open the safe?
Acid or thermite
The fine metallic dust indicates the safe was breached from above or behind using a chemical compound or thermal lance rather than traditional lock-picking tools.
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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