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 secretary. How did he know the secretary was lying when she claimed she was home all day?
The ink stain
The victim's cup was punctured and leaked tea onto the desk, but the secretary claimed she hadn't been in the office all day. Yet, she had a fresh ink stain on her right index finger, which only the office printer—or a pen used recently at that specific desk—could produce, placing her at the 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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