Mafia 37. Haven of Evil.

So, Thor, you think that Neira was killed by a labyrinth keeper's trap (2 people), and that during the night there wasn't a single murder committed by a negative character, and the clue points to the labyrinth keeper? I'm sorry, but the Vistrit scenario seems more likely to me.
Unless, of course, you're part of the mafia and, by doing so, you've revealed yourself, knowing for sure that there was no murder by a negative character, and then someone tore Neira to pieces, for example, a doctor, a rogue, or an old man with a bunch of keys, and you want to pull his strings.