Is Underworld: Endless War Based On A Book?

My son is dying. That is the only truth that matters. Not that I am a half-blood with no pack standing. Not that my Crosser's Permit expired six months ago, and every night I fall asleep wondering if tonight is the night they come for us. Not that I mop floors and scrub blood off marble tiles in a hotel that belongs to the most dangerous wolf family in Silver Hollow, a city that does not officially exist, hidden inside Las Vegas like a knife inside a smile. My name is Tara De Leon. I was once a healer good enough to have been recruited by three different pack academies. Now I am invisible. A cleaning woman. A ghost in a uniform. I became invisible on purpose. Because invisible women survive. And survival is all I have left to give my son. Kai is seven years old. He has his father's jaw and my mother's eyes and a laugh that sounds like something the moon herself invented. He also has Fade Sickness, a supernatural disease that is slowly, quietly, methodically dissolving his wolf-soul from the inside out. Without the Blood Resonance Treatment, available only in Silver Hollow, available only to those with pack connections and pack money, he has maybe eight months. Maybe less. I would burn down every pack in this city to buy him one more day. I just never thought I would have to.

For hundreds of years, witches have been a sub species to the vampire race, used as slaves to do the bidding of the undead creatures; but when one witch catches the eye of the vampire Prince, all that could change. The very way the world was run will be erupted into chaos, throwing off the balance that so many had died to protect. When Luna is ripped from her bed in the night, she knew her time had come, that she would pay for her father’s mistake; her world would crumble around her when her mother is killed by the prince and she is taken into his custody. A slave. But that is what all witches should expect, what they are born into. It is the way it had been for hundreds of years, Vampires were the hierarchy of the world, though not that the mortals knew that; and perhaps they never would. The undead creatures liked to feast on the unknowing, on those they could control, dis-guarding the corpses when they had finished. Luna is taken to A city one hundred and seventy feet under the streets of Paris, there she would have to learn how to be a good slave as those around her all believed that witches and warlocks deserved to be there, that they were a lesser species and needed to be controlled. But when the young witch reveals her power, all that was about to change. A mind link had never been formed between a witch and a vampire before, no one thought it possible, but when Luna makes it into Silas’ mind something happens; something that would change the course of their destiny and the fate of all those around them. With rebellion and chaos only around the corner, how will anyone survive?

Astrid’s life ended in blood and betrayal. Her second chance begins in the pages of a book she once read—Blood and Moonlight, a world where ancient vampires and fierce werewolves wage a war older than the moon itself.Reborn in the body of a doomed noble girl whose death will ignite the coming carnage, Astrid must outwit fate itself to survive. Every whispered promise hides a blade, every stolen glance could be a trap, and the line between love and danger is razor-thin.But the deeper she steps into the game of predators, the more she realizes someone here knows the truth about her past life—someone who might be the very killer who ended it.Survival means rewriting the story.Love might mean losing her soul.And in a world ruled by fangs and claws, Astrid will have to decide—Will she be prey… or predator?

In a world where forbidden love and ancient prophecies collide, Maeve, an outcast from birth, finds herself entangled in a dangerous game of power and betrayal. As the last of the triplet sisters, her uniqueness is both her curse and her strength. When her unexpected mate bond with not one, but three Lycan kings shatters their world, an unforeseen evil rises, threatening to tear them apart. With a destiny marked by sacrifice and redemption, Maeve must navigate a treacherous path, where the boundaries between love and darkness blur, and the ultimate price for survival may be her very soul.

When 17-year-old omega, Robin Douglass falls discovers the true reason her pack went to war with the vampires, she must decide what to do with that knowledge. Give her loyalties to her mate, the alpha’s son, and the pack that treated her like she was nothing, or to the vampire master who showed her who she really was and helped her power grow. Before she or her heart can choose, the alpha is determined to keep events of the past war hidden, even if it means starting another war.

Every hundred years, one Luna is chosen to unite the fractured packs who have been at war for ages . Ivy is forced into that role, she expects to be a political puppet but instead she is faced with three rival Alphas whom she becomes entangled with—deadly, each drawn to her. To save her people she must choose a side, and a mate. A wrong decision could end it all, end her even, and the more power she gains the less she trusts everyone—even her own heart. Will this Luna choose the right mate and unite all packs, or will fate throw in a nasty slide which she falls in?