ChronX: Allow me to introduce you to a little concept called
WIFOM. Speculations about when, how, why, or where the scum did something aren't exactly prohibited, but they rarely lead anywhere conclusive. The scum could have killed him because he was on to one of them. OR the scum could have killed him because he was "on to" a lot of people, many of whom might be townies. BUT the scum might have already considered that we'd think that, so they thought it would be perfect cover for killing him if he really
was
on to one of them.
Do you see how that can go on forever in an endless yet completely unproductive cycle? The scum did what the scum did, and we won't know why until the game is over.