Sandra Holt became a substitute bride to save her family from ruin. When her beautiful older sister fled on her wedding day, Sandra stepped into the white dress and married the cold, commanding Alexander Ashford a billionaire who barely looked at her during their vows.By day, she's trapped in a loveless marriage with a husband who treats her like an obligation. By night, a mysterious masked man named Zane slips onto her balcony, quotes poetry, and makes her feel alive for the first time in her life.She knows she should tell her husband about the intruder. Instead, she falls for him.But Sandra doesn't realize the truth: There is no intruder. There is no other man. Alexander created Zane to test whether his substitute bride loves power and wealth or the real person beneath the billion-dollar mask.Now he's trapped in his own deception, falling for a woman who thinks she's betraying him every time she kisses his other self.When the truth comes out, Sandra will have to decide: Can she forgive the man who manipulated her heart? Or will she walk away from the only person who's ever made her feel chosen—even if he had to become two different men to do it?In a game of hearts and masks, someone is about to lose everything.