He was made to drain the living. She was made to lure them to their deaths. They should have been nothing to each other, except ruin.When Caelum, prince of the Abyssal Courts, and Nereia, a fugitive mermaid of the Tidal Kingdoms, collide on the cursed Liminal Shore, they break every law their worlds have written. Their love is impossible. Their love is catastrophic. And their love produces something neither world has ever seen.Sera is the daughter of the deep and the dark, part mermaid, part vampire, part something the old books call a myth. She can breathe both air and water. She blooms wherever she walks, flowers pushing through cracks in stone, sea life surging toward her like a prayer. She is the female of spring, a rare creature of myth said to carry the power to restore dying worlds.She is also unwanted.Rejected by the Tidal Kingdoms for the blood on her tongue. Hunted by the Abyssal Courts for the scales on her skin. Abandoned on the shore where she was born, Sera has spent her life learning that existing between two worlds means belonging to neither.But when both worlds begin to die, the seas bleeding dark, the night growing cold, they come looking for the thing they threw away.She is not sure she wants to be found.