A Discovery of Witches is a television show based on the popular fantasy novel of the same name by Deborah Harkness. The series follows the story of Diana Bishop, a young scholar who discovers a magical manuscript in Oxford's Bodleian Library, setting off a chain of events that leads her to unlock her hidden powers and enter the world of witches, vampires, and daemons. As she navigates this dangerous supernatural world, Diana forms an alliance with a vampire named Matthew Clairmont and together they uncover the secrets of her past and the true extent of her abilities.