For Libby Sparks, turning sixteen means only one thing…death. Guardian rule demands she attend the ritualistic Inquest that will unveil her talents and secure her place in society. But that isn’t all that will be revealed in Libby’s case. The more talents you have the better, at least to some degree. Four or five talents will guarantee you a life of luxury, but seven…that is the mark of the Destroyer. Libby knows her Inquest will reveal her to be the Guardians’ greatest enemy. Their law requires her death before her eighteenth birthday. If she lives, prophecy foretells that the world will fall into chaos and destruction. Once her destiny is revealed, Libby is abandoned when her mother throws her out, her boyfriend tries to kill her, and her best friend shuts her out. Only Milo, a slightly grungy outcast, seems willing to be her friend—but Libby soon realizes he has secrets of his own. His secrets may very well have everything to do with her own destiny. In order to make it to her eighteenth birthday, Libby must bury her talents and convince the world she is harmless. Her plan only lasts until Milo is put in danger and Libby is forced to choose. Abandon her friend to save her own life, or embrace her destiny and truly become the Destroyer.

Olivia's best friend is not imaginary. He’s not a ghost, either. And she's pretty sure he's not a hallucination. He’s just Mason. He is, however, invisible. When Olivia spotted the crying little boy on her front porch at five years old, she had no idea she was the only one who could see him. Twelve years later when new-girl Robin bumps into the both of them and introduces herself to Mason, they are both stunned. Mason couldn't be more pleased that someone else can see him. Olivia, on the other hand, isn't jumping at the chance to welcome Robin into their circle. Jealousy may have something to do with that, but honest fear that Robin's presence will put Mason in danger is soon validated when a strange black car begins showing up everywhere. The race to find out what Robin knows in time to protect Mason from whatever threats are coming becomes Olivia's only focus.