Shadow of Night (All Souls #2) by Deborah Harkness

IT BEGAN WITH A DISCOVERY OF WITCHES.

Historian Diana Bishop, descended from a line of powerful witches, and long-lived vampire Matthew Clairmont have broken the laws dividing creatures. When Diana discovered a significant alchemical manuscript, she sparked a struggle in which she became bound to Matthew. Now the fragile coexistence of witches, daemons, vampires and humans is dangerously threatened. Seeking safety, Diana and Matthew travel back in time to London, 1590. But they soon realise that the past may not provide a haven...

Genres: Fantasy - Romance - Historical Fiction - Paranormal - Vampires - Witches - Time Travel - Magic - American Author