Who says you're the killer?
(IGnore this next bit, KiK won't let me paste in so this is the only way I can give my friend what to send to the murderer.)
[Insert Username]
You have been chosen to play the role of the Murderer in the roleplay "A Night With Ellisiere". Do not tell anyone this. Do not respond to this PM as the person who is sending this message is a vampiric thrall and has no idea how to respond to your responses.
In your posts you should not directly make any statements in your descriptions that say you are the murderer, though saying through IC conversation that you are is acceptable, if your character would be someone who tries to double bluff. As all players are able to encounter a dead body, it will simply be a fact that your character killed them, so don't complain about character controlling if people say they saw you walk out of the crime scene room.
You may also encounter dead bodies, but you will be pretending you didn't kill them and may not describe your character observing someone in the process of being killed. It is your objective to avoid detection, by framing someone else or in any other mean you feel necessary. Everyone elses objective is to work out who the killer is by exploiting hints you drop. And please do drop hints, because it'll be more fun for everyone.