Picking up fromA Discovery of Witchescliffhanger ending,Shadow of Nighttakes Diana and Matthew on a trip through time to Elizabethan London, where they are plunged into a world of spies, magic, and a coterie of Matthews old friends, the School of Night. As the search for Ashmole 782 deepens and Diana seeks out a witch to tutor her in magic, the net of Matthews past tightens around them, and they embark on a very differentand vastly more dangerousjourney.