Ah, fair enough. Although, Night 2 was evidence of another killing faction, so many deaths.
The mafia may have just targeted Cid because he was not a mafian, this action doesn't prove or disprove Cid being an SK. This is irrelevant to this point.
Also, if (pretty wild if, I know), if Faris is scum that appears innocent to regular cops, then the whole Cid being poisoned and you being the saviour is bogus (could mean you're in cahoots, could mean that they fooled you, who knows). While this is unlikely it is still possible.