Three men checked into a seaside motel on a stormy night: Mr. Blue, Mr. Green, and Mr. Red. The next morning, Mr. Blue was found robbed. Mr. Green claimed he was asleep with earplugs in. Mr. Red claimed he was reading a book by the window all night. Detective Vance inspected Mr. Red's room and arrested him immediately. What did Vance see on Mr. Red's window?
Condensation on the inside
Mr. Red claimed to be reading by the window all night during a stormy night, but the windowpane had condensation on the outside (or inside) that blocked all light, making reading impossible without wiping it.
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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