Dr. John Dee, astrologer and philosopher to Queen Elizabeth I, and Dr. Giordano Bruno, King Henri of France’s protégé, are absorbed by the coming Great Conjunction of Saturn and Jupiter in the beginning of a new quadrant of the sky, the beginning of a new age that happens only once a millennium. Neither knows that murder, conspiracies involving Queen Elizabeth and Mary Stewart, once queen of Scotland, will bring them close to death for black magic.