Heart of Stone - Angel's Guardian, #3

Maxim and Angel's idyllic existence is once again threatened by an enemy who will never give up. As gruesome vampire attacks begin to sweep over the world's biggest cities, it becomes obvious that Toma, twisted by his hatred, envy, and hunger for revenge, has returned. He is determined to destroy his hated cousin Maxim and wrest the vampire crown from him. But as the number of butchered humans rises, and the existence of vampires is revealed to the world, it becomes apparent that something much more sinister is on the works.
Toma wants not only the vampire crown; he wants the world and is willing to destroy most of humanity to rule the rest!