The matter of who's good and who's evil can be decided by the answer to a single question: Whose side are you on? Now, as High Queen of the Fae, Mac faces her greatest challenge yet: ruling the very race she was born to hunt and kill—a race that wants her dead yesterday, so they can put a pure-blooded Fae queen on the throne. But challenges with her subjects are the least of her concerns when an ancient, deadly foe resurfaces, changing not only the rules of the game but the very game itself, initiating a catastrophic sequence of events that have devastating consequences and leave Mac questioning everything she's ever learned and everyone she's ever loved.