The Crimson Pact - Book One of the Bloodbound Chronicles

They were trained to hunt the darkness.
But this time, the darkness is hunting them.
For generations, the world has been protected by a secret order of vampire hunters-an elite brotherhood sworn to stand between humanity and the bloodthirsty creatures that stalk the night. Now, that order is on the brink of collapse, and a far more ancient evil is rising.
Eliana is one of the last of the true hunters-relentless, disciplined, and fueled by a past soaked in vampire blood. At her side is Anne, a ...