Serial Killer: Second Edition

From BoardGameGeek:

Serial Killer 2nd Edition is a 4-50 players bluffing and hidden role game. In Victorian era, surrounded by crime and suspicion, the citizens and police must find and arrest the killers before blood of the innocents are spread everywhere in the city. When the game begins, the Serial Killer can "kill" other people by secretly sending the signal (eg. touching, nudging, winking etc.) And whenever a player receives the signal, He/She must die and be eliminated. However, If a Police is eliminated, It's time to find the Serial Killer(s)! the remaining players must discuss and vote for elimination. The Citizen team wins when all Serial Killers are eliminated. In contrast, the Criminal team wins when the number of Serial Killer(s) equals to half of the remaining players, or all Police and Detectives are eliminated.