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Detective riddle

Five guests sign the hotel log one by one, and the manager remembers only these facts. Nico signed before Luca. Luca signed before Opal. Dmitri signed before Nico. Opal signed before Felix. Who signed first?

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: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.

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