Mafia 37. Haven of Evil.

I really don't want to eliminate anyone based on a single clue, because in the case of Spiro, it's too risky, and I don't even see a clear connection for the cleaning lady. NNV.

At night, one of Reinhard's friends visited him, and they were happy to meet.

Morning could swear that someone was watching him throughout the night while he chatted with one of his acquaintances.

I think scientists were looking for Raina and Morning.
But what this is -

on the way back, he stopped by his neighbor to ask about work, but he was fast asleep.

I don't understand, but it doesn't really look like a clue.

Added 11 minutes later
Regarding the clue: maybe we should try to connect Vincenzo Natali and Raccoon City? Unless the latter is just a background element. The release of the game Resident Evil: Operation Raccoon City is planned for 2012, and Vincenzo Natali's film "Theorem" is also planned for release in the same year, but there is almost no information about it, and the title doesn't seem to be related to anyone. except perhaps it resembles Thorium)