He was my husband's most feared business rival—a cold, heartless multi-billionaire who ruled the city’s corporate empire and its darkest underbelly. I built my husband’s business from nothing, only to be stripped of my company shares, thrown out onto the streets, and brutally betrayed when I caught him in our bed with my childhood best friend. Left with nothing but a burning desire for vengeance, I made a deal with the devil himself: Xavier Knight. The rules of our transaction were simple: He gives me the absolute power and resources to systematically ruin my ex-husband's life. In return, I pay his price—belonging to him completely behind closed doors, acting as his fake fiancée, and obeying his command. My heart is broken, and I have vowed never to love again. He is a predator who doesn't believe in love—only absolute possession. But inside his penthouse, our dark contract ignites an explosive, unbridled physical chemistry that threatens to swallow us both alive. Who will burn first when the lines between revenge and dangerous obsession completely blur?