Odessa Ashwater knows there's a fine line between love and hate.Loving a siren inevitably leads to death or insanity. Nevertheless, after Dessa rescued Crown Prince Kastian of Hydratta from drowning, she was convinced they were destined for each other.Now, a century later, she's sure the only thing they're fated for is to destroy each other.Kastian Stormbreaker is unshakable.Many years ago, he lost his family, his crown, his freedom, and the opportunity to find his soul-bonded mate all in a single night. Now, nothing can break through his calm facade.Nothing, except the mesmerizing siren whose captivating beauty and fierce animosity he can't resist.When an enemy from Kastian's past asks for Odessa's hand in marriage, she views it as an ideal chance to form a strategic alliance for her court while distancing herself from Kas. But when the engagement turns deadly and Odessa gets in over her head, Kastian is the only one who can save her from drowning.The Little Mermaid meets The Princess Bride in this spicy and addictive standalone sequel to #1 fantasy bestseller, A Thorn in Every Heart.