1st off I came into the game as a sheriff
Some one was stupid enough to claim Survivor before Night. (Fail host for starting game during day)
I quickly opened up my log of Sheriff strats (Yes I have a mafia log of advanced play and META game probabilities(sp).
I chose 'Sher to Exe Strat':
I accused the Survivor of being a witch or amn saying that odds are he is guilty 2:1. (flaw'ed argument of course)
I refuse to VOTE Guilty on anyone but him the entire game.
Mafia/SK think I'm Exe as does Town so I live entire game. (why waste a kill on the Exe right?)
Since Host made my role OP by haivng me detect all roles I find out who the SK and a mafia member are.
I still insist it is the guy who claimed survivor (without any proof) and town listens to me (dispite believing i'm the Exe)
and kills him.

Next day I say:
Thanks for the Exe Win town, as a reward ______ is the SK. Enjoy your game.
GG

Scrubs can win a game as town.
Adv level players win as town without sharing the win.

Undercover Sheriff and no one knew for the entire game.

Survivor is dead, and only town wins.