Lost Souls: the Nightwalker

Talia Simone likes living in the shadows and has done so for the last one hundred and fifty years. Her secret has survived through caution and restraint. Her soul mate, Vincent, has been destroyed, and her only human companion, David, now in old age, is growing weaker by the day. Facing immortality alone, she tries to convince David to let her turn him; instead, he presents her with a dying wish that will force her out of the shadows, unleashing her vengeance upon the land of the living. London's sex traffickers are about to face their worst nightmare: a vigilante vampire with a vendetta. Only two men can get close to her: one wants to help in her quest; the other wants to catch her.