Harry chortled back just as a shaft of light illuminated the chamber. It grew and grew until it filled the entire room, as Narcissa led the wedding procession into the place, which, Harry whispered to Hermione, was called the Alembic. All of the Witnesses were now dressed in identical, high-collared scarlet robes with golden tassels, and Narcissa’s ceremonial gown now looked a deep, regal purple in the half-light from her flaming torch.