A fallen angel, torn farther from redemption by the half-blood vampire that he loves, struggles with the new dark power he has stolen.

Royal siblings left to their own devices, with a taste for blood, are faced with a choice. Stay in the human world, or return to the Netherworld where their mother tries to prevent war.

Koa, separated from all that she loves, must break away from her captors, or convince them to join her side against the angels that betrayed her and continue to hunt her and the angel she loves.

With a war between angels, vampires, and demons, Koa is just one of the keys to saving the world. The other key, is the king of Elyan… Koa’s brother. But is his heart as pure as Koa’s?

As he sets his sights on the Lyrinian throne, the answer can be the difference between life and death for Koa, and all of her loved ones.

But what Koa doesn’t know is that a demonic beast watches in secret, with her blackened heart set on Koa’s death

 What would you do if a demon threatened your mother’s life? If you’re like Koa, you’d sharpen your enchanted sword and  go after him…
Our world is threatened by the creatures of an alternate land called the Netherworld. Koa and the Netherworld division  are there to keep the vampire population in check. Koa is a powerful half-blood vampire. Her best friend is her boss, she  has a cursed mother, an enchanted sword, and an attractive human pet.
Koa also has a problem. A Netherworld serial killer, with a taste for little girls, threatens everything Koa has worked hard  to protect. Not even Koa’s boss, Halston can stop him. But he knows one prisoner that can. Too bad that prison is in the  Netherworld.
Is Koa ready to journey to the Netherworld to release the one creature that can break her mother’s curse and protect all  that she holds dear?

 Not all vampires are created equal…
Koa is a half-blood vampire with not only the ability to fly, but survive in the sun’s light. She will do anything to protect  her mother, and break her curse. The demon, Bund, wants more than her mother’s life. He wants something from Koa, a  power that she doesn’t even know she has, and will rip through as many humans as he can to get her to surrender.
Agent Koa Ryeo-won, and her boss, Halston, formed a crew of supernatural agents to stop Bund. But is a prophet, a  temptress, a War-Breeder, a half-blood with an enchanted sword, and a few angels enough to stop what Bund has  planned?
In the midst of a war between the humans of the mortal world, and the creatures of the Netherworld, Koa discovers the  truth of her past. She finds herself torn between two men, and in the center of everything. Faced with all of her returned  memories, Koa also finds herself more powerful than ever. Being a half-blood is hard enough, but what exactly is Koa’s  other half?
The truth can save…or destroy everything.