Diana and Matthew have returned from their time-walk to Elizabethan times and much has changed. The dangers are graver as is the search for the Book of Life. Finding it will require a lot of Diana and Matthew and cost so much more.
A Discovery of Witches (All Souls Trilogy #1)
Author: Deborah Harkness
Forbidden love and dangerous magic. Diana Bishop has spent most of her life ignoring her magic and everything else supernatural, but when the historian calls up a powerful manuscript that hasn't been seen in centuries and is met by vampire Matthew Clermont, her life changes forever.