I've mentioned this before but
PCGamer just did a small piece.
Basic premise-
Upto four people are assigned as Traitors and must kill all the innocents, kills of traitors can be inspected to find out when they died and players that are assigned detectives can find even more information from the bodies.
This was rushed as I have to go out about 5minutes ago, just read the link plx xD.
Looks really fun!