Deborah Harkness is an American scholar and novelist, best known as a historian and as the author of the All Souls Trilogy, which consists of The New York Times best-selling novel A Discovery of Witches and its sequels Shadow of Night and The Book of Life. Her latest book is The Black Bird Oracle, a sequel to the All Souls Trilogy. No. 1 on The New York Times Fiction best seller list for 1 week, from the issue of August 4, 2024 (Ballantine Books). Wiki link