Cruxim by Karin Cox
Synopsis: Amedeo is Cruxim, a mysterious, immortal fallen angel. Destined to seek redemption as a vampire hunter, he quenches his insatiable hunger on vampire blood. But when the object of his passion, the novice nun Joslyn, is turned into a vampire and enters a vampire coven, Amedeo’s worlds collide. Helping him along the way is Sabine, a Sphinx and guardian who also protects humans from vampires. Shattered by the loss…