She spent four years making herself into the woman who could destroy him. Piper Lennon was twenty-six when Beckett Rowe took apart her father's company in thirty-one days. It broke her father. It emptied her mother's life. It left Piper with one goal and four years to build herself into the person who could execute it. Now she's thirty, a forensic auditor with a clean reputation and a specialization that should have disqualified her from the assignment. But the regulatory placement came through anyway. Sixteen weeks inside Rowe Capital. Full access to the books of the man who destroyed her family. She walked into his office on a Tuesday morning expecting to find evidence. She did not expect him to recognize her. She did not expect him to give her the thread. And she did not expect to spend nine weeks discovering that the man she had come to destroy had spent four years building himself into someone who could be destroyed by her. Dark Obsession is a 25,000-word standalone dark romance novella. Tropes: enemies-to-lovers, morally grey CEO, revenge arc, slow burn to obsessive, age gap, power dynamics, forbidden workplace romance, eyes-open HEA. Content notes: explicit on-page sexual content (three scenes), themes of financial crime, organized-crime adjacent antagonist, discussion of a parent's mental health crisis. No cheating. No cliffhanger. The heroine chooses. For readers of Penelope Douglas, Tarryn Fisher, Rina Kent, Parker S. Huntington, and H.D. Carlton.