The Black Bird Oracle by Deborah HarknessRead about another entry on the list.
This is the latest entry in Harkness’ All Souls series that began with A Discovery of Witches. Diana is an Oxford scholar and reluctant witch who finds a missing alchemical manuscript and then falls in love with a vampire, thrusting her into an age-old inter-species power struggle. She and her vampire go on the run to trace the manuscript’s origins and figure out why so many would kill to possess its missing pages, sending the couple on an adventure through time and places like Oxford, the French countryside, the Northeastern US, and Elizabethan England.
If you haven’t read the first three books in that series, you’ll want to do that before diving into The Black Bird Oracle (spoilers ahead). When the Congregation demands the twins be brought in for examination, Diana visits her great-aunt to understand her own power better. In hopes of protecting the children from whatever lies ahead, she embarks on a dark path of magic that her mother once pursued with a magical oracle deck to guide her.
--Marshal Zeringue