Nancy Holder & Debbie Viguie 
CRUSADE: The Cursed Ones [EPUB ebook] 

The Cursed Ones, or vampires, have made their presence known to mankind. They promised to help bring peace to the world but then declared war on humanity. The identity of their leader is unknown. Most people are too afraid or unwillingly to take a stand against them. Others, like eighteen-year-old Jenn Leitner, train secretly to become vampire fighters and risk everything in the process. Alongside her is fellow Hunter, Antonio de la Cruz. But Antonio has a secret – he is a vampire fighting on the side of humanity. Jenn must battle with her hatred of all things vampire, and her love for Antonio. For together only they can bring light into the darkness the vampires have drawn over the face of the planet