...Saturday, 2:22 pm... The players all gather around Johnny.
"So...one of your own has already left the mansion. There are eleven of you left. Try to enjoy your stay, and live every day like it's your last. After all..every few days for one of you, it just might be."
Suddenly, the mansion door creaks, and slams shut, locking behind Johnny and the remaining 11 guests. The eleven guests know now that they are in for qa long bumpy ride. One of the guests is out to get them all. He works for me. He..is the killer.
But even he isn't assured of surviving the stay at Murder Mansion. Every few days there's a quiz about the killer, their profile, and their recent moves. Late at night while the guests sleep, the killer goes to work, because the guest who scores lowest on the quiz will be murdered...unless they correctly identify the killer. In that case, the killer is murdered and a new killer is chosen.
There are immunity amulets to be handed out throughout the game, but once a player uses one, they cannot get another one for the rest of the game. Be ready, because in two days, your first challenge will begin!