A Discovery of Witches by Deborah Harkness
Diana Bishop is an American history scholar working on cataloguing and deciphering ancient manuscripts in England. She also comes from a long line of witches, though she tries to lay low, and not to use her powers. Ever. But when she is somehow able to find a long lost, and spellbound, manuscript, every other witch, demon, and vampire in Oxford take notice of her, including 1500 year old vampire-turned-geneticist Matthew Clairmont.
Think Harry Potter meets Twilight, only for grown-ups, and this is your book. As hokey as it sounds with the whole vampire-witch romance thing, I really enjoyed this book. So much that I count it among my favorite series' of books. It's light, with just enough history, romance, and intrigue to keep it interesting.
I give this one a B+If you like this one,try the sequel, Shadow of Night. The third/final book in this series comes out in July. I can hardly wait!