Inspector Vance found the victim slumped over a desk with a punctured tea cup, a fresh ink stain on his right index finger, and a window blown wide open by a winter gale. Vance immediately arrested the victim's business partner for murder. How did Vance know it wasn't a suicide?
Frozen ink
The room was freezing due to the open winter gale, yet the ink on the victim's finger was still wet and fresh. In freezing temperatures, liquid ink would have frozen instantly.
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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