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Detective riddle

A valuable painting was stolen from a gallery while the lights were on. Three guards were on duty: Guard A was watching the North door, Guard B was watching the South door, and Guard C was asleep. The thief walked straight past Guard A and Guard B. Why didn't they stop him?

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: Medium. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.

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