Imagine being whisked from the city to a secret lakefront estate, where half-human half-animal creatures invite you to join them for dinner, devilish dances and esoteric rituals — but under the surface lies mystery and, perhaps, murder. Cynthia’s von Buhler’s immersive play, The Illuminati Ball, won rave reviews. I spent a day with the characters, imagining how they spent their day before the evening’s festivities.