Catherine will stop at nothing to find the missing half of a cursed map—and to avenge her father's death. She's sailed through storms, betrayed allies, and spilled blood to get this far. Then she meets Rob, a pirate captain with secrets as deep as the ocean. He has his own reasons for hunting the map. He has his own ghosts. Together, they uncover a hidden past that binds their fates together. The truth could unite them—or destroy them both. Beneath crimson sails, Catherine must decide: vengeance or the man who makes her want to live?