Giselle Santoro has spent the last nine years hating Artem Sokolov-the ruthless heir to the Bratva sect of the Families in New York. Likewise, he's spent those years trying to knock her down off of her high horse and destroy every ambition she's had to become the head of the Mafia sect. Artem has always viewed Giselle as reckless, infuriating, and far too determined to survive in a world designed to consume women whole. He tells himself that his cruelness is a strategy, and that without it, she might get too close. To danger. To him. When their families suddenly force them into a marriage, their hatred becomes the only thing they can still control. But somewhere between the threats, the power plays, and the violence surrounding them; obsession begins to blur the lines between love and hate. And in a marriage built on hatred, someone must admit defeat. Until Death or Defeat is book one of the Until Death Duet. Tropes: Enemies to lovers / Mafia x bratva / Brat x brat tamer / Forced marriage / Mutual obsession (and denial) / Dual POV / Found family / Morally gray cast Author's note: This book ends on a cliffhanger. This romance contains dark themes, for TW/CW, please check the list at the beginning of the book, or check the author's website or social media.