Private investigator Griffin Thorn must find out who wants to kill opera superstar Brianna Keller. Griffin becomes Brianna's bodyguard after an unknown assailant attacks her, and his admiration of her talent quickly turns into love for her. Secretly, Griffin is a werewolf keeping one step ahead of bounty hunters dedicated to wiping out his kind. Orphaned as a boy, Griffin took bloody revenge on the hunter who killed his parents. Griffin thwarts another attack on Brianna and, with hard-nosed FBI agent Tarrant Cobb, tries to uncover the stalker's identity before he strikes again. Brianna learns Griffin's secret and falls in love with him anyway, but another deadly attempt to take the singer's life nearly kills her children. With the puzzle unsolved, Griffin realizes his violent past might destroy his dream of staying with Brianna forever. But Griffin soon learns that in life, love, and murder, nothing is ever as it seems.