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Detective riddle

A rare manuscript was stolen from the university library. The thief left behind a muddy boot print on the white marble floor. Three professors had muddy boots: Professor Plum, Professor Green, and Professor Mustard. However, Professor Plum was in a wheelchair, Professor Green had been bedridden with a broken leg for a week, and Professor Mustard was out of the country. Yet none of them were the thief. How is this possible?

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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