Mafia 75. The Mystery of the Ancient Ruins.

On the last day?

No, on the 5th night. The murder shifted to Freud due to a clouded mind. If they had executed the maniac, there wouldn't have been any clouded mind. So, the Cop would have died. I was also planning to kill him, thinking he was Horatius or Vilius (somehow, I considered Robin to be Kosha).
And besides Robin, there were no peaceful roles targeting me.

Added after 8 minutes

You can just look at the game's outcome.

The Maniac won because the town, the cartel, and randomness wanted it that way.