You are Don Tillman.
You are a professor of genetics and a very calculated person with rather lacking social skills. After your recent project to find a suitable wife according to an over complicated self made questionnaire you encountered Rosie- the one woman with all the wrong characteristics. Yet you fell in love with her (which due to your lack of understanding emotions took you long enough to realize). You are now accused for a crime you didn’t commit (not for the first time) and have to protect your name by finding the real killer. Thus, project Mafia commences!
Passive Ability : Movies can’t make you cry
People tend to assume your autism means you don’t have emotions. Unfortunately, the fact you just can’t cry from any movie doesn’t help this false assumption. Every time a player dies, your inability to release yourself from the awareness that this is just a game makes you quite invincible compared to others. If a player dies during the night and if you are lynched during the next day phase, you will not die. Your role will be swapped with a random role in the role pool, however.
Active Ability: Overthinking
You tend to over analyze everything. Because of that, once per night you may target 2 players. You will deduce whether one of them ever targeted the other player during the game, and what they did. These results will come only after either of the two is dead. (You can’t use this ability if you already targeted 2 players and neither has died).