To save her father’s life, she will wear my ring. Scarlett Hanlon is the epitome of temptation, beautiful chaos wrapped in obsession...and my enemy's daughter. Fate offers me a chance to destroy her father and the beautiful and feisty Scarlett is my only way into his inner circle.
 So when she comes to me for help, I give her an ultimatum. Marry me…or else. It’s the perfect plan. I’ll use my fake fiancé as a pawn, a bright and shiny toy that will sweeten my quest for revenge. I will flaunt her, use her, and then break her when the job is done. But Scarlett isn’t one to be possessed and discarded. She’s got an appetite for my kind of filthy, depraved, and twisted games, making my blood burn hot and setting off all kinds of fires. When my plans for revenge implode and dark truths are revealed, I realize Scarlett's the real chaos I crave above all else. But once all sins are revealed, it may be too late for me to save her. Fans of dark billionaire, secret society, fake fiancé, age gap, and enemies to lovers tropes will devour book three in the OBSIDIAN KNIGHTS SECRET SOCIETY series by USA Today bestselling author Kristen Luciani! Ready for a dark billionaire romance with no cheating and an HEA? Then scroll up and one-click to get your copy of THE SINS THAT RUIN today! Publisher's Note: Please be aware that THE SINS THAT RUIN contains explicit and mature content and graphic violence that some readers might find unsettling or triggering. A full list of triggers can be found in the book.