With the threat of the vampire monarchy becoming stronger every day, the Black Lily must take drastic measures. As the leader of the underground resistance, Arabelle concocts the perfect idea to gain the attention of the Glass Tower. Her plan? Attend the vampire prince's blood ball and kill him. Fortunately for Prince Marius, her assassination goes awry, and Arabelle flees, leaving behind only her dagger.

Marius is desperate to find the woman whose kiss turned into attempted murder, hunting for the mysterious assassin he can't push out of his mind. But what he uncovers could change the course of his life forever . . .

Contains mature themes.