The Book of Life (All Souls Trilogy, #3)

The Book of Life is a 2014 fantasy novel by American scholar Deborah Harkness, the third book in the All Souls trilogy. As the sequel to the 2012 bestseller, Shadow of Night, it follows the final steps in the story of Diana Bishop, a historian who comes from a long line of witches, and Matthew Clairmont, a long-lived vampire, as they unlock the secrets of an ancient manuscript.