Shipwrecked historian Isla washes onto an impossible island and into the arms of Kael, a kraken prince who walks the shore as a devastating man. He offers shelter for a catalog his drowned library; share his nights if she wishes. While rival salvors hunt his treasure, Isla uncovers a secret that could devastate empires. Tidal kisses, velvet danger, and a love vast as the sea. She came for answers—she’ll stay for him.