I was desperate when I summoned him. A demon. My demon. My sister was dying, and no human skill could save her. As soon as Kade came out of the shadows, I knew I had done something terrible. His sharp smile promised forgiveness. He showed up but wasn't there to help. He was here to own me. The deal was simple: he would save my sister's life in exchange for seven nights of my own. Seven nights in his world, where my worst fears come true, and happiness and pain are the same. But as the lines between kidnapper and hostage blur, I start to understand what Kade is really offering. He didn't pick at random; our lives are tied together in ways I never imagined, thanks to a course that goes back to the beginning of time. And something or someone wants to ruin us both before I find out the whole truth. I understand that the real risk isn't what I agreed to as I get to know Kade better. The lure is the growing calls to keep him. Even though it makes my soul hurt.