"What is this?!" Avery's voice trembled with rage, her fists clenched as she stared at the people who betrayed her. "You're selling me off to some old man?" she spat. Her mother flinched. "Avery, please… it’s the only way to clear the debt." Her father’s voice thundered. "You will marry Sergei Kuznetsov. End of story." Avery Wells was never the obedient daughter—not with her leather boots, smart mouth, and fire-for-blood temper. But nothing prepared her for being thrown into the cold world of Russian mafia royalty. Sergei Kuznetsov: seventy, cruel, and untouchable. Her new husband. Kieran Kuznetsov: his youngest son—illegitimate, exiled, and carved from shadows. In a world full of masks, guns, and buried secrets, Avery has only one rule: never fall for the devil’s son. But the more she fights, the closer the darkness pulls. In this house, freedom is a myth. And love… might just be a death sentence.

Kieran, the ruthless heir to the Tenebrous Kingdom, is a monster forged from darkness and fire. His dragon-werewolf bloodline courses with untamed power, striking fear into the hearts of all who dare oppose him. But when Kieran captures Kalliope, a delicate beauty with a hidden past, he unwittingly unleashes a centuries-old vendetta. Kalliope is a mermaid, descendant of a people who have waged war against the dragons since the dawn of time. As Kieran's slave, Kalliope walks a deadly tightrope in his kingdom, concealing her true nature. But as their paths entwine, a forbidden attraction ignites, threatening to destroy the fragile balance between their worlds. Can their love overcome the ancient hatred that has haunted them for centuries? What happens when Kieran discovers Kalliope's secret?