Riley

Riley was the person who organized the event. He signed contracts with his servants and invited the guests. After faking his death with a deal made with CJ, he hid in the shadows, still making an appearance secretly in each episode. From every guest that was killed, he collected something special. With a special cauldron soup from Ash, a special item from each departed guest, and a little blood, Riley was able to craft the Purple Scroll that was still missing. He himself was trapped and was using the scrolls that contain contracts from the servants in order to perform a ritual to cleanse the Pendant that was haunting him. After the sacrificed guests removed the contracts power, Riley was forced to give up. He finally accepted in his fate and was going to free the survivors. However, they would all be trapped there for as long as the final scroll had power. He forces a final duel onto the survivors. After Kam comes out first, Riley performs the final ritual, sacrificing he and Cassie in order to completely erase the Pendant from existence.