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Detective riddle

An old sea captain was found murdered in his seaside cottage. The front door was locked from the inside, but the back sliding glass door was wide open to the salty ocean breeze. A heavy brass anchor sat on the living room floor, covered in fresh lake water. The detective smirked at the rookie cop. What detail exposed the staged crime scene?

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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