A rare manuscript was stolen from the university library. The thief left behind a muddy footprint near the window. The three student suspects—Nora, Owen, and Penny—all wore identical rubber boots. Nora claimed she was in the library all night. Owen said he walked across the campus quad. Penny said she stayed in her second-floor dorm room. Detective Zane arrested Penny. Why?
Penny
Penny claimed she stayed in her second-floor dorm room, yet her boots left a muddy footprint at the crime scene on the ground level. She couldn't have muddy boots from outdoors if she never left her room.
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: Easy. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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