Hunted by the Dead King (Immortal Hunters) by Mallory Benjamin

Dead or alive—he owns me. Magnolia made a deal with the devil, and she’s been paying for it ever since. For seven years, her only contact with the living has been dragging bodies back to the Dead King. With each human he forces her to hunt, another piece of her humanity slips away, leaving Magnolia more dead than the ghosts inside his castle. But she doesn’t have a choice. The Dead King owns her—body, mind, and soul. Her next task: infiltrate Viven, the kingdom of the living, during a deadly tournament designed to recruit new dragon riders. To complete her hunt, Magnolia must live alongside the most lethal beings in Viven. But monsters are nothing new to her—she’s spent years chained to the deadliest one, becoming nothing more than a weapon with a pulse. As the tournament unfolds, Magnolia realizes she’ll be forced to betray the one man who looks at her like she’s still human, and she starts wanting something she can never have. Can Magnolia escape the deal she made seven years ago, or will this hunt take what’s left of her humanity—and her life?