Phasing (The Dark Origins)

Just when seventeen-year-old Ashley thinks she’s able to quit her job at Legion, a government of supernatural beings, her long-time partner, Colt’s, family starts to disappear. They aren’t the only one’s either; spooks have been vanishing all over the world.
Ashley chooses to find Colt’s family as her final case with Legion, but as they begin to investigate she begins to uncover things about herself she never thought possible. She starts to think that maybe Legion holds too much power, and maybe they won’t be so happy to just let her walk away from them.