Dez is a good girl who does as she's told and tries not to be noticed. Then she rescues a boy from a cage, and he tells her secrets about herself. Now inside her burns a darkness that will transform her. Everything is about to change—and neither Caleb, nor the Otherkin, nor those who hunt them, are prepared for what Dez will unleash.

Everyone has secrets. I had no idea mine would lead me into shadow. Dez has found the place where she belongs. With the otherkin. With Caleb. Or so she thought. As the barriers between our world and Othersphere fall, a wall rises between Dez and Caleb, leaving her fiercest enemy her only friend. And maybe something more. Now Dez must make a devastating choice: keep the love of her life, or save the otherkin from annihilation.

I always wanted to know where I came from. Now that knowledge could destroy me. Dez thought she knew who her mother was, who she was. Thought she had friends, a boy who loved her, and a school where she finally fit in. But across the veil linking our world and the next lurks a monster which can annihilate. . .or liberate her. Now she must confront it there with help from one boy who loves her and one who can't stand the sight of her. Dez thought she understood her tiger form, her deepest self. But in this treacherous place, she'll have to choose between the two halves of her soul—and determine which world survives.