I'm keeping my dsister vote and I think we should do that, zexen can investigate vetteman or scifiboy.
if dsister = mafia, then invisible = mafia. At worse we lose 1 townie, and discover the identity of 3 people. No one was assassinated, so I doubt we have a serial killer, and the mafia doesn't know who the doctor is, so the doctor can protect the cop.
anyways, dsister just claimed he was pro town, but failed to even try to point the finger at anyone at all. All he managed to do was randomly vote for axumblade who I don't think is mafia at this moment.