She's the only one of her kind. And she doesn't even know her name.
Two investigators, one human and one vampire, find a young woman among a mass of dead bodies. She has no memories--nothing but her clothes, two receipts, and a mysterious dagger carved with the initials SB.
As she seeks her identity, she discovers she's unlike any other creature in the world--making her the most valuable person on the planet. And the most wanted.