A man is found in his locked office with no wounds and no windows open. A shattered vase lies on the floor, but no one else entered. How was he killed?
Category: Mystery · Difficulty: expert
Hint: Think about invisible dangers released when objects break.
Answer
Poisoned air escaped from broken vase
Explanation
The vase contained poisonous gas that was released when it shattered, causing death without visible injuries.
This is a expert mystery riddle — one of the harder riddles here. The answer is Poisoned air escaped from broken vase.
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