Darkness Before Dawn (Darkness Before Dawn – Trilogy)

Only sunlight can save us.
We built the wall to keep them out, to keep us safe. But it also makes us prisoners, trapped in what's left of our ravaged city, fearing nightfall.
After the death of my parents, it's up to me—as the newest delegate for humanity—to bargain with our vampire overlord. I thought I was ready. I thought I knew everything there was to know about the monsters. Then again, nothing could have prepared me for Lord Valentine . . . or his son. Maybe not all vampires are killers. Maybe it's safe to let one in.
Only one thing is certain: Even the wall is not enough. A war is coming and we cannot hide forever.