Lorelei Fischer is cursed. A mermaid who can’t shapeshift, can’t create portals, and is no longer fully who she was meant to be. Too ashamed to admit how badly she failed to her sisters, she takes refuge in a small town in northern California and opens a used bookstore. With no way to regain what she’s lost, she resigns herself to a life half-lived. After nearly drowning under the dark of the new moon, there’s no escaping the truth. She’s being hunted, and this enemy will stop at nothing to take her. Lorelei must find a way to reclaim her birthright and her abilities before it's too late. Because the sea holds more monsters than she could have dreamed—and one of them wants her dead.