In her past life, Serena betrayed her husband, Cassian—unaware he was the Prince of Thalassia. To save her, Cassian brutally tore out his own scales and dissolved into seafoam.Reborn, Serena vows to protect the vulnerable merman who gave everything for her. But Cassian isn’t as helpless as he seems; behind his insecure gaze lies a dangerous, possessive obsession.