Game: Mr .M’s Code of Murder: The Byzantine Assassin

In a dark and baroque castle, a curious assembly of people have gathered together. How such diverse characters as a Duke, an Augur, a Scholar and someone's pet cat have come together in this sinister place is never revealed. All we know is that amongst them is a deadly assassin who means, for equally obscure reasons, to murder five victims and then escape into the night before he or she is unmasked.