We have 9 players left. That means 5 Town, 3 Mafia and 1 Serial. If we Mislynch, that leaves 4 Town, 1 Serial and 3 Mafia. If Mafia kill Town or Serial, and Serial kills Town, Mafia will control the lynch. So if we lynch today and it flips Town, the Serial has to not kill, otherwise they'll lose the game if they don't hit Mafia. I earlier posited that we no lynch, but we can force the Serial to side with us here instead.