Scarlett Thresher doesn't like humans. She's an immortal warrior. She's lethal with a sword. And she can hold her whiskey better than most men. But visiting the human realm gives her panic attacks. Too bad her baby brother is getting married there and skipping the wedding isn't an option. But when Scarlett stumbles across FBI Agent Greyson Derrington at a murder scene, she realizes that his killer is quite literally inhuman. And he's going to need cooperation from the faerie realm to have any hope of stopping the monster. As they close in on an insidious evil that's stalking human women through their dreams, Grey begins to awaken parts of Scarlett that she long believed were shattered beyond repair. Can he help her to release her fear and let go of the past, before time runs out for the next victim?