How can a Master, who on the very first day digs up two pieces of evidence and tries to push for their execution, be Mafia? I haven't played in a long time, maybe I'm underestimating the skill of current players, but when has something like this happened before?
The Master is just good at digging up evidence as a player. Nothing prevented him, as Mafia, from finding dirt on the first citizen from the town, on whom there is at least some kind of plausible chain of reasoning, and start pushing for their execution, and if the town votes to execute, say: "OH, SORRY, I MADE THE GAME TOO DIFFICULT, I COULDN'T DO IT!" And then whitewash himself with this move.
At the same time, note that the Master isn't playing with psychology and isn't in a hurry to discuss anything other than the evidence. This is very suspicious.
And I want to remind you that we are on a timer. We have the right to make a maximum of one mistake in an execution. After that, it's 5-3, at night - 4-3, and after that, we will need to execute with 100% efficiency.