When Darkness Falls (Book 1, the Darkness Falls Series)

When darkness falls, the vampires come out. Sixteen-year-old Kiara Morrow knows that better than anyone. She's been trained her whole life to wipe bloodsuckers off the face of the earth. But then she meets Luke. He's a vampire but he's unlike any vamp Kiara's ever known. ...

The Tunnels

I awake in what seems to be a test room. I have no memory. A voice from a walkie-talkie begins to give me instructions on how to survive, and as I follow them, the deeper into this horrible, twisted world I fall.