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?
Dmitri.
Putting every clue in a line gives this order: Dmitri, Nico, Luca, Opal, Felix.
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.
More detective riddles
Inspector Frost is checking the order in which five suspects left the locked library. Gwen left before Boris. Boris left before Jonas. Elena left before Gwen. Hugo left before Elena. Who left fourth?
Three kids race to build the tallest pencil tower. Ava finished before Ida. Ida finished before Max. Who finished last?
Three kids race to build the tallest egg tower. Ava finished before Max. Max finished before Eli. Who finished last?
Three kids race to build the tallest picnic basket tower. Leo finished before Sam. Ida finished before Leo. Who finished last?
Three kids race to build the tallest sled tower. Kai finished before Max. Omar finished before Kai. Who finished last?
Five guests sign the hotel log one by one, and the manager remembers only these facts. Opal signed before Mara. Mara signed before Hugo. Hugo signed before Dmitri. Luca signed before Opal. Who signed last?

