When playing ToL there is one thing I noticed evils doing that they shouldn’t especially as unseen. The scum rarely lie about anything meaningful. I remember seeing a big post about this for FM but the goal of the Unseen/Cult is not to trick people that your BD but to Trick people that others are not. You do this by BSing invest results.
Example:
Your assassin and you have an enforcer (how useless!). The MM could bus you to confirm himself and convert someone else OR you could claim that someone is unseen as sheriff. You could also claim Obs that found a neut in the early game or that you saw someone visit the person you killed. If they confirm whatever you say then you are confirmed and you bus the 3rd unseen. Otherwise you might be able to get them executed. If things go badly then the MM converts and its business as usual.
The time when this is most useful however is as the starting Evil King. Rather than putting everyone as BD you can around D3 or D4 accuse someone of being not BD then you know isn’t unseen. If they claim an unimportant BD then they will be executed and you would be next (but the unseen/cult might have a royal at that point). If they are an important BD then you decide fate. If they are neut then you are “confirmed not evil” and you might have just killed the NK.
Right now people always are too honest as Scum. Try claiming to NOT have been occupied. Or claim Prince to get him to waste an execute and a day of time.