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 Okafor is checking the order in which five suspects left the locked library. Luca left before Mara. Mara left before Opal. Kira left before Luca. Opal left before Gwen. Who left first?
Inspector Quinn is checking the order in which five suspects left the locked library. Opal left before Boris. Mara left before Opal. Kira left before Luca. Luca left before Mara. Who left first?
The snowman is bigger than the mitten, and the mitten is bigger than the snowball. Which one is the smallest?
A valentine was left on the desk. It was signed with a doodle of a cat. Only Sam draws cats. Who sent it?
Inspector Quinn is checking the order in which five suspects left the locked library. Pavel left before Kira. Luca left before Aria. Kira left before Iris. Iris left before Luca. Who left second?
The mitten is bigger than the icicle, and the icicle is bigger than the sled. Which one is the smallest?

