Harkness's much-anticipated sequel, Shadow of Night, picks up from A Discovery of Witches' cliffhanger ending. Reluctant witch Diana Bishop and vampire geneticist Matthew Clairmont time-travel to Elizabethan London and are plunged into a world of spies, magic, and a coterie of Matthew's old friends, the School of Night. As the search for the lost, enchanted manuscript known as Ashmole 782 deepens and Diana searches for a witch to tutor her in magic, the net of Matthew's past tightens around them, and they embark on a very different--and vastly more dangerous--journey.