A ship's captain was found murdered in his locked cabin. His logbook was open on the desk, with the final entry written in neat handwriting: 'Heading north at ten knots, all is quiet.' Detective Thorne checked the ship's navigation system and immediately ordered the arrest of the first mate. Why?
The ship was docked in port
A ship docked in port cannot be heading north at ten knots. The log entry was written after the captain's death to fake a timeline.
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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