Demon 12

There is no rest for Jonathan Steel! Following the defeat of the thirteenth demon, Vivian Ketrick has plans to take control of its territory. But another-and much more powerful-entity has arrived from Europe to challenge her claim. Rudolph Wulf has genetically engineered his blood to carry "vampire magick,"and he is using it to recruit an army of vampires and werewolves the likes of which the world has never seen.

Raven, an assassin from Steel's past, has also surfaced. Hired by Vivian, she ...