The door swings shut behind you.
"Good evening sirs," says a man with a cultured voice who was waiting for you in there.
He is, quite plainly, a butler, in smart black formalwear, immaculately pressed, with starched white collar.
And on his face, obscuring all his features, a plain white harlequin mask. His voice sounds somewhat hollow behind it.
"I trust you had a comfortable journey?"
The butler takes you through several rooms, each more ornately decorated than the last. Expensive vases, wall hangings, scupltures, works of art...
Then one room he brings you into is entirely unlike the others. It is entirely white- so white that you can barely distinguish the walls and celings and corrners. So white it hurts your eyes, in fact. He waits for you all to come in and closes the door, also whote, behind you so you cannot see the way in or out.
"If you would mind waiting here for a few moments," says the Butler. "The process will be very short."